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Benefit Plans - Pension amounts recognized (Details) - Pension Plan - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Amounts recognized in accumulated other comprehensive loss, excluding tax effects, that have not yet been recognized as components of net periodic benefit cost |  |  |
Accumulated benefit obligation | $ 601 | $ 543 |
US |  |  |
Amounts recognized in the Consolidated Balance Sheets |  |  |
Non-current asset | 32 | 7 |
Current liabilities | (1) | (1) |
Non-current liabilities | (10) | (10) |
Net asset (liability) recognized | 21 | (4) |
Amounts recognized in accumulated other comprehensive loss, excluding tax effects, that have not yet been recognized as components of net periodic benefit cost |  |  |
Net actuarial loss | 15 | 40 |
Prior service cost | (6) | (6) |
Net amount recognized | 9 | 34 |
Information about plan obligations and assets for plans with an accumulated benefit obligation in excess of plan assets |  |  |
Projected benefit obligation | 11 | 11 |
Accumulated benefit obligation | 10 | 9 |
Components of net periodic benefit cost |  |  |
Service cost | 5 | 6 | $ 6
Interest cost | 14 | 13 | 13
Expected return on plan assets | (18) | (21) | (21)
Amortization of actuarial loss | 1 |  |
Amortization of prior service credit | (1) |  | (1)
Net periodic benefit cost/(benefit) | 1 | (2) | (3)
Amount related to the amortization of the entity's accumulated actuarial loss included in accumulated other comprehensive loss that will be recognized in net pension expense in next fiscal year | 1 |  |
Amounts recorded in other comprehensive income and net periodic benefit cost |  |  |
Net actuarial (gain) loss | (25) | 19 | (7)
Amortization of actuarial loss | (1) |  |
Amortization of prior service credit | 1 |  | 1
Total recorded in other comprehensive income | (25) | 19 | (6)
Net periodic benefit cost | 1 | (2) | (3)
Total recorded in other comprehensive income and net periodic benefit cost | (24) | 17 | (9)
Non-US |  |  |
Amounts recognized in the Consolidated Balance Sheets |  |  |
Non-current asset | 31 | 32 |
Current liabilities | (2) | (1) |
Non-current liabilities | (52) | (47) |
Net asset (liability) recognized | (23) | (16) |
Amounts recognized in accumulated other comprehensive loss, excluding tax effects, that have not yet been recognized as components of net periodic benefit cost |  |  |
Net actuarial loss | 62 | 57 |
Transition obligation | 1 | 1 |
Prior service cost |  | (1) |
Net amount recognized | 63 | 57 |
Information about plan obligations and assets for plans with an accumulated benefit obligation in excess of plan assets |  |  |
Projected benefit obligation | 56 | 49 |
Accumulated benefit obligation | 45 | 41 |
Fair value of plan assets | 2 | 2 |
Components of net periodic benefit cost |  |  |
Service cost | 3 | 3 | 3
Interest cost | 10 | 10 | 11
Expected return on plan assets | (8) | (9) | (10)
Amortization of actuarial loss | 2 | 2 | 2
Net periodic benefit cost/(benefit) | 7 | 6 | 6
Amount related to the amortization of the entity's accumulated actuarial loss included in accumulated other comprehensive loss that will be recognized in net pension expense in next fiscal year | (2) |  |
Amounts recorded in other comprehensive income and net periodic benefit cost |  |  |
Net actuarial (gain) loss | 7 | 4 | (3)
Prior service cost | 1 |  |
Amortization of actuarial loss | (2) | (2) | (2)
Total recorded in other comprehensive income | 6 | 2 | (5)
Net periodic benefit cost | 7 | 6 | 6
Total recorded in other comprehensive income and net periodic benefit cost | $ 13 | $ 8 | $ 1

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