Benefit Obligations

As discussed in Note 1, effective January 1, 2013, the Company elected to change its policy for recognizing actuarial gains and losses and changes in the fair value of plan assets for its defined benefit pension plans and other postretirement benefit plans. This accounting change has been applied retrospectively to all periods presented.

The components of net periodic benefit costs are as follows:



	Pension Benefits				Postretirement Benefits		Pension Benefits				Postretirement Benefits
	Three Months Ended September 30,						Nine Months Ended September 30,
	2013		2012		2013	2012	2013		2012		2013	2012
			As Adjusted (Note 1)			As Adjusted (Note 1)			As Adjusted (Note 1)			As Adjusted (Note 1)
	(In $ millions)						(In $ millions)
Service cost	9		7		—	—	26		21		2	1
Interest cost	39		42		3	3	116		127		8	9
Expected return on plan assets	(57	)	(51	)	—	—	(169	)	(153	)	—	—
Amortization of prior service cost (credit)	—		1		—	—	1		2		—	—
Total	(9	)	(1	)	3	3	(26	)	(3	)	10	10

Commitments to fund benefit obligations during 2013 are as follows:



	As of September 30, 2013	Total Expected 2013
	(In $ millions)
Cash contributions to defined benefit pension plans	22	30
Benefit payments to nonqualified pension plans	16	22
Benefit payments to other postretirement benefit plans	11	24

The Company’s estimates of its US defined benefit pension plan contributions reflect the provisions of the Pension Protection Act of 2006.

The Company participates in a multiemployer defined benefit plan in Germany covering certain employees. The Company’s contributions to the multiemployer defined benefit plan are based on specified percentages of employee contributions and totaled $5 million for the nine months ended September 30, 2013.