Benefit Obligations (Tables)

9 Months Ended

Sep. 30, 2020

Retirement Benefits [Abstract]

Schedule of Net Periodic Benefit Costs Recognized

The components of net periodic benefit cost are as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	Pension Benefits	Post-retirement Benefits	Pension Benefits	Post-retirement Benefits	Pension Benefits	Post-retirement Benefits	Pension Benefits	Post-retirement Benefits
	(In $ millions)
Service cost	2	1	3	—	8	1	7	—
Interest cost	22	—	28	1	64	1	86	2
Expected return on plan assets	(50)	—	(46)	—	(149)	—	(139)	—
Special termination benefit	—	—	—	—	1	—	—	—
Total	(26)	1	(15)	1	(76)	2	(46)	2

Schedule of Company Commitments to Fund Benefit Obligations

Benefit obligation funding is as follows:

	As of September 30, 2020	Total Expected 2020
	(In $ millions)
Cash contributions to defined benefit pension plans	16	23
Benefit payments to nonqualified pension plans	16	20
Benefit payments to other postretirement benefit plans	3	5
Cash contributions to German multiemployer defined benefit pension plans(1)	6	8

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⁽¹⁾The Company makes contributions based on specified percentages of employee contributions.