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Retirement Benefit Plans (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Actual contribution to defined benefit pension plans |  |  | $ 8 |
Defined Benefit Plan, Benefit Obligation, Payment for Settlement | $ 63 |  |  |
Components of net periodic benefit cost: |  |  |  |
Settlement |  |  | 26 | $ 0
Minimum [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Expected Future Employer Contributions, Current Fiscal Year | 15 |  | 15 |
Maximum [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Expected Future Employer Contributions, Current Fiscal Year | 25 |  | 25 |
Other Postretirement Benefits Plan [Member] |  |  |  |
Components of net periodic benefit cost: |  |  |  |
Service cost | 0 | $ 0 | 0 | 0
Interest cost | 1 | 0 | 2 | 1
Expected return on plan assets | 0 | 0 | 0 | 0
Settlement | 0 | 0 | 0 | 0
Amortization of unrecognized prior service credit | (1) | (1) | (2) | (2)
Amortization of unrecognized loss | 0 | 1 | 0 | 1
Net periodic benefit (income) cost | 0 | 0 | 0 | 0
Pension Plan [Member] | UNITED STATES |  |  |  |
Components of net periodic benefit cost: |  |  |  |
Service cost | 0 | 0 | 0 | 0
Interest cost | 3 | 2 | 5 | 4
Expected return on plan assets | (3) | (4) | (6) | (7)
Settlement | 26 | 0 | 26 | 0
Amortization of unrecognized prior service credit | 0 | 0 | 0 | 0
Amortization of unrecognized loss | 1 | 1 | 2 | 2
Net periodic benefit (income) cost | 27 | (1) | 27 | (1)
Pension Plan [Member] | Non-US [Member] |  |  |  |
Components of net periodic benefit cost: |  |  |  |
Service cost | 4 | 4 | 9 | 9
Interest cost | 3 | 3 | 6 | 6
Expected return on plan assets | (6) | (7) | (11) | (14)
Settlement | 0 | 0 | 0 | 0
Amortization of unrecognized prior service credit | 0 | 0 | 0 | 0
Amortization of unrecognized loss | 3 | 2 | 5 | 4
Net periodic benefit (income) cost | 4 | $ 2 | $ 9 | $ 5
Defined benefit plan settlement with an insurance company [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Benefit Obligation, Payment for Settlement | 50 |  |  |
Defined Benefit Plan, Plan Assets, Payment for Settlement | 50 |  |  |
Defined benefit plan settlement by lump-sum payment to employees [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Benefit Obligation, Payment for Settlement | $ 13 |  |  |

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- Definition Amount of payment, which decreases benefit obligation of defined benefit plan, for irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Transaction constituting settlement includes, but is not limited to, making lump-sum cash payment to participant in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contract. Excludes decreases to benefit obligation for remeasurement due to settlement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(10) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 15 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=7577095&loc=d3e8001-114927 + Details
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