Retirement Benefit Plans (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Actual contribution to defined benefit pension plans	$ 3
Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Current Fiscal Year	15
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Current Fiscal Year	25
Other Postretirement Benefits Plan [Member]
Components of net periodic benefit cost:
Service cost	0	$ 0
Interest cost	1	1
Expected return on plan assets	0	0
Amortization of unrecognized prior service credit	(1)	(1)
Amortization of unrecognized loss	0	0
Net periodic benefit (income) cost	0	0
Pension Plan [Member] | UNITED STATES
Components of net periodic benefit cost:
Service cost	0	0
Interest cost	2	2
Expected return on plan assets	(3)	(3)
Amortization of unrecognized prior service credit	0	0
Amortization of unrecognized loss	1	1
Net periodic benefit (income) cost	0	0
Pension Plan [Member] | Non-US [Member]
Components of net periodic benefit cost:
Service cost	5	5
Interest cost	3	3
Expected return on plan assets	(5)	(7)
Amortization of unrecognized prior service credit	0	0
Amortization of unrecognized loss	2	2
Net periodic benefit (income) cost	$ 5	$ 3