Benefit Obligations (Tables)

3 Months Ended

Mar. 31, 2019

Retirement Benefits [Abstract]

Schedule of Net Periodic Benefit Costs Recognized

The components of net periodic benefit cost are as follows:

	Three Months Ended March 31,
	2019			2018
	Pension Benefits		Post-retirement Benefits	Pension Benefits		Post-retirement Benefits
	(In $ millions)
Service cost	2		—	2		—
Interest cost	29		—	26		—
Expected return on plan assets	(46	)	—	(52	)	—
Total	(15	)	—	(24	)	—

Schedule of Company Commitments to Fund Benefit Obligations

Benefit obligation funding is as follows:

	As of March 31, 2019	Total Expected 2019
	(In $ millions)
Cash contributions to defined benefit pension plans	6	22
Benefit payments to nonqualified pension plans	5	21
Benefit payments to other postretirement benefit plans	1	5
Cash contributions to German multiemployer defined benefit pension plans(1)	2	9