Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2022		Jun. 30, 2021		Jun. 30, 2022		Jun. 30, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total Other comprehensive income (loss), net of tax	$ (72)		$ 87		$ 64		$ (26)
Total Other comprehensive income (loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before tax	26		43		193		3
Other comprehensive income (loss), pretax	26		43		193		3
Total Other comprehensive income (loss), net of tax	(58)	[1]	87	[1]	80	[2]	(23)	[2]
Cumulative translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before tax	(70)		71		26		(28)
Other comprehensive income (loss), pretax	(70)		71		26		(28)
Total Other comprehensive income (loss), net of tax	(132)		106		(50)		(49)
Retirement plans and other retiree benefits adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before tax	19		17		37		20
Other comprehensive income (loss), before reclassifications, pretax	0		(3)		0		(22)
Reclassification from AOCI, pretax	19		20		37		42
Other comprehensive income (loss), pretax	19		17		37		20
Other comprehensive income (loss), before reclassifications, net of tax	0		(1)		0		(15)
Reclassification from AOCI, net of tax	13		17		28		33
Total Other comprehensive income (loss), net of tax	13		16		28		18
Gains (losses) on cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before tax	77		(45)		130		11
Other comprehensive income (loss), before reclassifications, pretax	83		(49)		141		4
Reclassification from AOCI, pretax	(6)		4		(11)		7
Other comprehensive income (loss), pretax	77		(45)		130		11
Other comprehensive income (loss), before reclassifications, net of tax	66		(38)		111		3
Reclassification from AOCI, net of tax	(5)		3		(9)		5
Total Other comprehensive income (loss), net of tax	$ 61		$ (35)		$ 102		$ 8

[1] Accumulated other comprehensive income (loss) includes cumulative translation losses of $3,398 at June 30, 2022 ($3,207 at June 30, 2021) and $3,269 at March 31, 2022 ($3,313 at March 31, 2021), respectively, and unrecognized retirement plan and other retiree benefits costs of $1,015 at June 30, 2022 ($1,160 at June 30, 2021) and $1,030 at March 31, 2022 ($1,176 at March 31, 2021), respectively.

[2] Accumulated other comprehensive income (loss) includes cumulative translation losses of $3,398 at June 30, 2022 ($3,207 at June 30, 2021) and $3,349 at December 31, 2021 ($3,158 at December 31, 2020), respectively, and unrecognized retirement plan and other retiree benefits costs of $1,015 at June 30, 2022 ($1,160 at June 30, 2021) and $1,044 at December 31, 2021 ($1,178 at December 31, 2020), respectively.