Equity, Changes in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Changes in Accumulated Other Comprehensive Loss, By Component, Net of Tax
Balance as of beginning of period	$ 26,315	$ 28,824	$ 27,521	$ 28,524
Other comprehensive income (loss)	556	(121)	721	(349)
Balance as of end of period	26,947	28,250	26,947	28,250
Accumulated Other Comprehensive Loss [Member]
Changes in Accumulated Other Comprehensive Loss, By Component, Net of Tax
Balance as of beginning of period	(1,109)	(1,055)	(1,272)	(870)
Other comprehensive income (loss) before reclassifications	555	(102)	716	(273)
Amounts reclassified from accumulated other comprehensive loss	(4)	(15)	(4)	(28)
Effect of exchange rates	5	0	7	(1)
Other comprehensive income (loss)	556	(117)	719	(302)
Balance as of end of period	(553)	(1,172)	(553)	(1,172)
Foreign Currency Translation Adjustment [Member]
Changes in Accumulated Other Comprehensive Loss, By Component, Net of Tax
Balance as of beginning of period	(1,102)	(883)	(1,264)	(735)
Other comprehensive income (loss) before reclassifications	554	(110)	716	(258)
Amounts reclassified from accumulated other comprehensive loss	0	0	0	0
Effect of exchange rates	0	0	0	0
Other comprehensive income (loss)	554	(110)	716	(258)
Balance as of end of period	(548)	(993)	(548)	(993)
Defined Benefit Plans Items [Member]
Changes in Accumulated Other Comprehensive Loss, By Component, Net of Tax
Balance as of beginning of period	(2)	(167)	(2)	(162)
Other comprehensive income (loss) before reclassifications	0	0	0	0
Amounts reclassified from accumulated other comprehensive loss	(2)	(3)	(4)	(7)
Effect of exchange rates	5	0	7	(1)
Other comprehensive income (loss)	3	(3)	3	(8)
Balance as of end of period	1	(170)	1	(170)
Gains (Losses) on Cash Flow Hedges [Member]
Changes in Accumulated Other Comprehensive Loss, By Component, Net of Tax
Balance as of beginning of period	(5)	(5)	(6)	27
Other comprehensive income (loss) before reclassifications	1	8	0	(15)
Amounts reclassified from accumulated other comprehensive loss	(2)	(12)	0	(21)
Effect of exchange rates	0	0	0	0
Other comprehensive income (loss)	(1)	(4)	0	(36)
Balance as of end of period	$ (6)	$ (9)	$ (6)	$ (9)