Equity, Changes in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Changes in Accumulated Other Comprehensive Loss, By Component, Net of Tax
Balance as of beginning of period	$ 26,605	$ 27,521
Other comprehensive income (loss)	(308)	165
Balance as of end of period	26,934	26,315
Accumulated Other Comprehensive Loss [Member]
Changes in Accumulated Other Comprehensive Loss, By Component, Net of Tax
Balance as of beginning of period	(469)	(1,272)
Other comprehensive income (loss) before reclassifications	(264)	161
Amounts reclassified from accumulated other comprehensive loss	23	0
Effect of exchange rates	(2)	2
Other comprehensive income (loss)	(243)	163
Balance as of end of period	(712)	(1,109)
Foreign Currency Translation Adjustment [Member]
Changes in Accumulated Other Comprehensive Loss, By Component, Net of Tax
Balance as of beginning of period	(602)	(1,264)
Other comprehensive income (loss) before reclassifications	(190)	162
Amounts reclassified from accumulated other comprehensive loss	0	0
Effect of exchange rates	0	0
Other comprehensive income (loss)	(190)	162
Balance as of end of period	(792)	(1,102)
Defined Benefit Plans Items [Member]
Changes in Accumulated Other Comprehensive Loss, By Component, Net of Tax
Balance as of beginning of period	130	(2)
Other comprehensive income (loss) before reclassifications	0	0
Amounts reclassified from accumulated other comprehensive loss	(1)	(2)
Effect of exchange rates	(2)	2
Other comprehensive income (loss)	(3)	0
Balance as of end of period	127	(2)
Gains (Losses) on Cash Flow Hedges [Member]
Changes in Accumulated Other Comprehensive Loss, By Component, Net of Tax
Balance as of beginning of period	3	(6)
Other comprehensive income (loss) before reclassifications	(74)	(1)
Amounts reclassified from accumulated other comprehensive loss	24	2
Effect of exchange rates	0	0
Other comprehensive income (loss)	(50)	1
Balance as of end of period	$ (47)	$ (5)