Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2021

Stockholders' Equity Note [Abstract]

Schedule of Treasury Stock

	Six Months Ended June 30,				Total From February 2008 Through June 30, 2021
	2021		2020
Shares repurchased	3,394,548		1,709,431		66,162,599
Average purchase price per share	$	147.30	$	87.87	$	80.15
Shares repurchased (in $ millions)	$	500	$	150	$	5,303
Aggregate Board of Directors repurchase authorizations during the period (in $ millions)	$	—	$	—	$	5,866

Schedule of Components of Other Comprehensive Income (Loss), Net

	Three Months Ended June 30,
	2021			2020
	Gross Amount	Income Tax (Provision) Benefit	Net Amount	Gross Amount	Income Tax (Provision) Benefit	Net Amount
	(In $ millions)
Foreign currency translation gain (loss)	6	1	7	(10)	4	(6)
Gain (loss) on cash flow hedges	(4)	1	(3)	1	—	1
Total	2	2	4	(9)	4	(5)

	Six Months Ended June 30,
	2021			2020
	Gross Amount	Income Tax (Provision) Benefit	Net Amount	Gross Amount	Income Tax (Provision) Benefit	Net Amount
	(In $ millions)
Foreign currency translation gain (loss)	9	(6)	3	—	(8)	(8)
Gain (loss) on cash flow hedges	40	(9)	31	(50)	12	(38)
Pension and postretirement benefits gain (loss)	(4)	—	(4)	—	—	—
Total	45	(15)	30	(50)	4	(46)

Schedule of Adjustments to Accumulated Other Comprehensive Income (Loss), Net

Adjustments to Accumulated other comprehensive income (loss), net, are as follows:

	Foreign Currency Translation Gain (Loss)	Gain (Loss) on Cash Flow Hedges (Note 14)	Pension and Postretirement Benefits Gain (Loss) (Note 9)	Accumulated Other Comprehensive Income (Loss), Net
	(In $ millions)
As of December 31, 2020	(260)	(56)	(12)	(328)
Other comprehensive income (loss) before reclassifications	9	40	(4)	45
Income tax (provision) benefit	(6)	(9)	—	(15)
As of June 30, 2021	(257)	(25)	(16)	(298)