XML 220 R128.htm IDEA: XBRL DOCUMENT v3.8.0.1
Financial structure and financial costs - Interest rate risk sensitivity (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Sensitivity analysis      
Financial liabilities $ (89,295) $ (90,157) $ (87,965)
Financial assets 72,163 62,452 62,133
Fair value, financial liabilities (90,840) (91,258) (88,795)
Fair value, financial assets 72,163 62,452 62,133
Impact of changes in interest rates on the cost of net debt      
Cost of net debt (1,534) (1,104) (873)
Current portion of non-current debt after swap (excluding capital lease obligations)      
Sensitivity analysis      
Financial liabilities (4,646) (4,614) (4,518)
Fair value, financial liabilities (4,645) (4,614) (4,518)
Held for trading - Other interest rate swaps      
Sensitivity analysis      
Carrying amount 76 33 (1)
Estimated fair value 76 33 (1)
Held for trading - Currency swaps and forward exchange contracts      
Sensitivity analysis      
Carrying amount 142 (23) (26)
Estimated fair value 142 (23) (26)
Due after 12 months | Bonds (before swaps)      
Sensitivity analysis      
Financial liabilities (36,613) (36,656) (39,257)
Fair value, financial liabilities (38,159) (37,757) (40,087)
Due after 12 months | Swaps hedging fixed-rate bonds      
Sensitivity analysis      
Financial liabilities (1,082) (3,651) (2,891)
Financial assets 606 845 1,219
Carrying amount (476) (2,806) (1,672)
Fair value, financial liabilities (1,082) (3,651) (2,891)
Fair value, financial assets 606 845 1,219
Estimated fair value $ (476) $ (2,806) $ (1,672)
Interest rate risk | 10 basis points      
Sensitivity analysis      
Reasonably possible increase in assumption (as a percent) 0.10% 0.10% 0.10%
Reasonably possible decrease in assumption (as a percent) 0.10% 0.10% 0.10%
Impact of changes in interest rates on the cost of net debt      
Impact on cost of net debt, interest rate increase $ (6) $ (17) $ (20)
Impact on cost of net debt, interest rate decrease 6 17 20
Interest rate risk | 10 basis points | Current portion of non-current debt after swap (excluding capital lease obligations)      
Sensitivity analysis      
Change in fair value due to interest rate increase 1 5 5
Change in fair value due to interest rate decrease (1) (4) (5)
Interest rate risk | 10 basis points | Held for trading - Other interest rate swaps      
Sensitivity analysis      
Change in fair value due to interest rate increase 12 7 8
Change in fair value due to interest rate decrease (12) (7) (8)
Interest rate risk | 10 basis points | Due after 12 months | Bonds (before swaps)      
Sensitivity analysis      
Change in fair value due to interest rate increase 191 221 156
Change in fair value due to interest rate decrease (191) (221) (156)
Interest rate risk | 10 basis points | Due after 12 months | Swaps hedging fixed-rate bonds      
Sensitivity analysis      
Change in fair value due to interest rate increase (83) (117) (144)
Change in fair value due to interest rate decrease $ 83 $ 117 $ 144
Interest rate risk | 100 basis points      
Sensitivity analysis      
Reasonably possible increase in assumption (as a percent) 1.00% 1.00% 1.00%
Reasonably possible decrease in assumption (as a percent) 1.00% 1.00% 1.00%
Impact of changes in interest rates on the cost of net debt      
Impact on cost of net debt, interest rate increase $ (63) $ (172) $ (204)
Impact on cost of net debt, interest rate decrease $ 63 $ 172 $ 204