Equity, Changes in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Changes in Accumulated Other Comprehensive Loss, By Component, Net of Tax
Balance as of beginning of period	$ 26,947	$ 28,250	$ 27,521	$ 28,524
Other comprehensive income (loss)	(151)	364	570	15
Balance as of end of period	26,746	28,000	26,746	28,000
Accumulated Other Comprehensive Loss [Member]
Changes in Accumulated Other Comprehensive Loss, By Component, Net of Tax
Balance as of beginning of period	(553)	(1,172)	(1,272)	(870)
Other comprehensive income (loss) before reclassifications	(161)	359	555	86
Amounts reclassified from accumulated other comprehensive loss	8	(21)	4	(49)
Effect of exchange rates	(2)	4	5	3
Other comprehensive income (loss)	(155)	342	564	40
Balance as of end of period	(708)	(830)	(708)	(830)
Foreign Currency Translation Adjustment [Member]
Changes in Accumulated Other Comprehensive Loss, By Component, Net of Tax
Balance as of beginning of period	(548)	(993)	(1,264)	(735)
Other comprehensive income (loss) before reclassifications	(155)	326	561	68
Amounts reclassified from accumulated other comprehensive loss	0	0	0	0
Effect of exchange rates	0	0	0	0
Other comprehensive income (loss)	(155)	326	561	68
Balance as of end of period	(703)	(667)	(703)	(667)
Defined Benefit Plans Items [Member]
Changes in Accumulated Other Comprehensive Loss, By Component, Net of Tax
Balance as of beginning of period	1	(170)	(2)	(162)
Other comprehensive income (loss) before reclassifications	0	0	0	0
Amounts reclassified from accumulated other comprehensive loss	(1)	(5)	(5)	(12)
Effect of exchange rates	(2)	4	5	3
Other comprehensive income (loss)	(3)	(1)	0	(9)
Balance as of end of period	(2)	(171)	(2)	(171)
Gains (Losses) on Cash Flow Hedges [Member]
Changes in Accumulated Other Comprehensive Loss, By Component, Net of Tax
Balance as of beginning of period	(6)	(9)	(6)	27
Other comprehensive income (loss) before reclassifications	(6)	33	(6)	18
Amounts reclassified from accumulated other comprehensive loss	9	(16)	9	(37)
Effect of exchange rates	0	0	0	0
Other comprehensive income (loss)	3	17	3	(19)
Balance as of end of period	$ (3)	$ 8	$ (3)	$ 8