Statement of changes in shareholders’ equity
| Download XLS (31 kB) | 
  | 
      
  | 
      Equity pertaining to Snam shareholders  | 
    ||||||||||||
(€ millions)  | 
      Note  | 
      Share capital  | 
      Negative reserve for treasury shares in the portfolio  | 
      Share premium reserve  | 
      Legal reserve  | 
      Reserve for fair value of cash flow hedging derivatives net of tax effect  | 
      Reserve for defined-  | 
      Consolidation reserve  | 
      Other reserves  | 
      Retained earnings  | 
      Net profit  | 
      Total  | 
      Minority interests  | 
      Total shareholders’ equity  | 
    
Balance at 31 December 2015  | 
      
  | 
      3,697  | 
      (5)  | 
      1,603  | 
      739  | 
      (3)  | 
      (16)  | 
      (1,701)  | 
      46  | 
      1,987  | 
      1,238  | 
      7,585  | 
      1  | 
      7,586  | 
    
Net profit for the first half of 2016  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      526  | 
      526  | 
      
  | 
      526  | 
    
Other components of comprehensive income:  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
    
Components that can be reclassified to the income statement:  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
    
- Portion of equity investments valued using the equity method pertaining to “other components of comprehensive income”  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      (13)  | 
      
  | 
      
  | 
      (13)  | 
      
  | 
      (13)  | 
    
- Change in fair value of cash flow hedging derivatives (effective share)  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      1  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      1  | 
      
  | 
      1  | 
    
Total comprehensive income for the first half of 2016  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      1  | 
      
  | 
      
  | 
      (13)  | 
      
  | 
      526  | 
      514  | 
      
  | 
      514  | 
    
- Allocation of dividend for 2015 (€0.25 per share)  | 
      
  | 
      
  | 
      
  | 
      (50)  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      (825)  | 
      (875)  | 
      
  | 
      (875)  | 
    
- Allocation of 2015 residual net profit  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      413  | 
      (413)  | 
      
  | 
      
  | 
      
  | 
    
Total transactions with shareholders  | 
      
  | 
      
  | 
      
  | 
      (50)  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      413  | 
      (1,238)  | 
      (875)  | 
      
  | 
      (875)  | 
    
Other changes in shareholders’ equity  | 
      
  | 
      
  | 
      
  | 
      3  | 
      
  | 
      
  | 
      
  | 
      21  | 
      (1)  | 
      2  | 
      
  | 
      25  | 
      
  | 
      25  | 
    
Balance on 30 June 2016  | 
      
  | 
      3,697  | 
      (5)  | 
      1,556  | 
      739  | 
      (2)  | 
      (16)  | 
      (1,680)  | 
      32  | 
      2,402  | 
      526  | 
      7,249  | 
      1  | 
      7,250  | 
    
Net profit for the second half of 2016  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      335  | 
      335  | 
      
  | 
      335  | 
    
Other components of comprehensive income:  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
    
Components that can be reclassified to the income statement:  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
    
- Portion of equity investments valued using the equity method pertaining to “other components of comprehensive income”  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      (2)  | 
      
  | 
      
  | 
      (2)  | 
      
  | 
      (2)  | 
    
Components that cannot be reclassified to the income statement:  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
    
- Actuarial profit (loss) from re-measurement of defined-benefit plans for employees  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      (5)  | 
      
  | 
      
  | 
      
  | 
      
  | 
      (5)  | 
      
  | 
      (5)  | 
    
- Portion of equity investments valued using the net worth method of the re-measurements of benefit plans defined for employees pertaining to “other components of comprehensive income”  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      1  | 
      
  | 
      
  | 
      1  | 
      
  | 
      1  | 
    
Total comprehensive net income for the second half of 2016  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      (5)  | 
      
  | 
      (1)  | 
      
  | 
      
  | 
      (6)  | 
      
  | 
      (6)  | 
    
Transactions with shareholders:  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
    
- Acquisition of treasury shares  | 
      
  | 
      
  | 
      (103)  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      (103)  | 
      
  | 
      (103)  | 
    
- Effects of the separation of Italgas Reti S.p.A. from Snam S.p.A.  | 
      
  | 
      (961)  | 
      
  | 
      (416)  | 
      (192)  | 
      
  | 
      14  | 
      1,006  | 
      
  | 
      (433)  | 
      
  | 
      (982)  | 
      (1)  | 
      (983)  | 
    
Total transactions with shareholders  | 
      
  | 
      (961)  | 
      (103)  | 
      (416)  | 
      (192)  | 
      
  | 
      14  | 
      1,006  | 
      
  | 
      (433)  | 
      
  | 
      (1,085)  | 
      (1)  | 
      (1,086)  | 
    
Other changes in shareholders’ equity  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      4  | 
      
  | 
      
  | 
      4  | 
      
  | 
      4  | 
    
Balance at 31 December 2016 (a)  | 
      2,736  | 
      (108)  | 
      1,140  | 
      547  | 
      (2)  | 
      (7)  | 
      (674)  | 
      35  | 
      1,969  | 
      861  | 
      6,497  | 
      
  | 
      6,497  | 
    |
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
    
Balance at 31 December 2016 (a)  | 
      2,736  | 
      (108)  | 
      1,140  | 
      547  | 
      (2)  | 
      (7)  | 
      (674)  | 
      35  | 
      1,969  | 
      861  | 
      6,497  | 
      
  | 
      6,497  | 
    |
Net profit for the first half of 2017  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      504  | 
      504  | 
      
  | 
      504  | 
    
Other components of comprehensive income:  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
    
Components that can be reclassified to the income statement:  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
    
- Portion of equity investments valued using the net worth method pertaining to “other components of comprehensive income”  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      (2)  | 
      
  | 
      
  | 
      (2)  | 
      
  | 
      (2)  | 
    
Total comprehensive income for the first half of 2017 (b)  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      (2)  | 
      
  | 
      504  | 
      502  | 
      
  | 
      502  | 
    
Transactions with shareholders:  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
    
- Allocation of dividend for 2016 (€ 0.21 per share)  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      (718)  | 
      (718)  | 
      
  | 
      (718)  | 
    
- Allocation of 2016 residual net profit  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      143  | 
      (143)  | 
      
  | 
      
  | 
      
  | 
    
- Acquisition of treasury shares  | 
      
  | 
      
  | 
      (202)  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      (202)  | 
      
  | 
      (202)  | 
    
Total transactions with shareholders (c)  | 
      
  | 
      
  | 
      (202)  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      143  | 
      (861)  | 
      (920)  | 
      
  | 
      (920)  | 
    
Other changes in shareholders’ equity  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
    
- Convertible bond loan equity component  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      17  | 
      
  | 
      
  | 
      17  | 
      
  | 
      17  | 
    
- Other changes  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      4  | 
      
  | 
      
  | 
      4  | 
      
  | 
      4  | 
    
Total other changes in shareholders’ equity (d)  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      21  | 
      
  | 
      
  | 
      21  | 
      
  | 
      21  | 
    
Balance on 30 June 2017 (e=a+b+c+d)  | 
      2,736  | 
      (310)  | 
      1,140  | 
      547  | 
      (2)  | 
      (7)  | 
      (674)  | 
      54  | 
      2,112  | 
      504  | 
      6,100  | 
      
  | 
      6,100  | 
    |