Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Increase (Decrease) Accumulated Other Comprehensive Loss, Net of Tax
Other comprehensive income (loss) attributable to the Company	$ (77)	$ 142	$ 79	$ 88
Net Effect of Exchange Rate Fluctuations
Increase (Decrease) Accumulated Other Comprehensive Loss, Net of Tax
Balance at beginning of the period	(1,160)	(1,310)	(1,290)	(1,229)
Change before reclassifications	(115)	123	15	42
Other comprehensive income (loss) attributable to the Company	(115)	123	15	42
Balance at end of the period	(1,275)	(1,187)	(1,275)	(1,187)
Change in Certain Derivative Instruments
Increase (Decrease) Accumulated Other Comprehensive Loss, Net of Tax
Balance at beginning of the period	(18)	(47)	(21)	(60)
Change before reclassifications	25	(17)	43	46
Amounts reclassified from accumulated other comprehensive loss	(4)	16	(19)	(34)
Translation effect	(1)	1	(1)	1
Other comprehensive income (loss) attributable to the Company	20		23	13
Balance at end of the period	2	(47)	2	(47)
Employee Benefit Plans
Increase (Decrease) Accumulated Other Comprehensive Loss, Net of Tax
Balance at beginning of the period	(643)	(963)	(661)	(983)
Change before reclassifications	(1)	(2)	(1)	(2)
Amounts reclassified from accumulated other comprehensive loss	12	19	24	39
Translation effect	15		21
Other comprehensive income (loss) attributable to the Company	26	17	44	37
Balance at end of the period	(617)	(946)	(617)	(946)
Accumulated Other Comprehensive Loss.
Increase (Decrease) Accumulated Other Comprehensive Loss, Net of Tax
Balance at beginning of the period	(1,821)	(2,320)	(1,972)	(2,272)
Change before reclassifications	(91)	104	57	86
Amounts reclassified from accumulated other comprehensive loss	8	35	5	5
Translation effect	14	1	20	1
Other comprehensive income (loss) attributable to the Company	(69)	140	82	92
Balance at end of the period	$ (1,890)	$ (2,180)	$ (1,890)	$ (2,180)