Postretirement benefits Schedule of amounts recognized in AOCI on a pretax basis (Details) - USD ($) $ in Millions |
Dec. 31, 2016 |
Dec. 31, 2015 |
---|---|---|
Pension Plan [Member] | UNITED STATES | ||
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | ||
Net actuarial loss (gain) | $ (207) | $ 0 |
Prior Service Cost | 0 | 0 |
Total | (207) | 0 |
Pension Plan [Member] | Non-US [Member] | ||
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | ||
Net actuarial loss (gain) | 156 | 107 |
Prior Service Cost | (2) | 7 |
Total | 154 | $ 114 |
Other Postretirement Benefit Plan [Member] | UNITED STATES | ||
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | ||
Net actuarial loss (gain) | 14 | |
Prior Service Cost | (395) | |
Total | (381) | |
Other Postretirement Benefit Plan [Member] | Non-US [Member] | ||
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | ||
Net actuarial loss (gain) | 3 | |
Prior Service Cost | 0 | |
Total | $ 3 |