Retirement Benefit Plans - Asset Allocations (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year, Under Contractual Obligation	$ 4
United States | Pension Plan [Member]
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	100.00%	100.00%
United States | Pension Plan [Member] | Real estate and other
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	16.00%	11.00%
United States | Pension Plan [Member] | Fixed income securities
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	50.00%	56.00%
United States | Pension Plan [Member] | Equity securities
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	34.00%	33.00%
Non-US [Member] | Pension Plan [Member]
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	100.00%	100.00%
Non-US [Member] | Pension Plan [Member] | Fixed income securities
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	33.00%	55.00%
Non-US [Member] | Pension Plan [Member] | Equity securities
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	37.00%	37.00%
Non-US [Member] | Pension Plan [Member] | Insurance contract, real estate and other [Member]
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	30.00%	8.00%
Minimum [Member]
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year	$ 10
Minimum [Member] | United States | Pension Plan [Member] | Real estate and other
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	0.00%
Minimum [Member] | United States | Pension Plan [Member] | Fixed income securities
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	45.00%
Minimum [Member] | United States | Pension Plan [Member] | Equity securities
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	25.00%
Minimum [Member] | Non-US [Member] | Pension Plan [Member] | Fixed income securities
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	29.00%
Minimum [Member] | Non-US [Member] | Pension Plan [Member] | Equity securities
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	30.00%
Minimum [Member] | Non-US [Member] | Pension Plan [Member] | Insurance contract, real estate and other [Member]
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	0.00%
Maximum [Member]
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year	$ 20
Maximum [Member] | United States | Pension Plan [Member] | Real estate and other
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	15.00%
Maximum [Member] | United States | Pension Plan [Member] | Fixed income securities
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	65.00%
Maximum [Member] | United States | Pension Plan [Member] | Equity securities
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	45.00%
Maximum [Member] | Non-US [Member] | Pension Plan [Member] | Fixed income securities
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	62.00%
Maximum [Member] | Non-US [Member] | Pension Plan [Member] | Equity securities
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	43.00%
Maximum [Member] | Non-US [Member] | Pension Plan [Member] | Insurance contract, real estate and other [Member]
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	36.00%