Equity, Changes in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Changes in Accumulated Other Comprehensive Loss, By Component, Net of Tax
Balance as of beginning of period	$ 27,067	$ 20,410	$ 25,468	$ 19,817
Other comprehensive income (loss)	210	(390)	393	(414)
Balance as of end of period	27,994	22,733	27,994	22,733
Accumulated Other Comprehensive Loss [Member]
Changes in Accumulated Other Comprehensive Loss, By Component, Net of Tax
Balance as of beginning of period	(1,205)	(1,009)	(1,359)	(1,008)
Other comprehensive income (loss) before reclassifications	269	(491)	443	(545)
Amounts reclassified from accumulated other comprehensive  loss	(36)	73	(58)	126
Effect of exchange rates	1	2	3	2
Other comprehensive income (loss)	234	(416)	388	(417)
Balance as of end of period	(971)	(1,425)	(971)	(1,425)
Foreign Currency Translation Adjustment [Member]
Changes in Accumulated Other Comprehensive Loss, By Component, Net of Tax
Balance as of beginning of period	(1,031)	(549)	(1,168)	(562)
Other comprehensive income (loss) before reclassifications	257	(442)	394	(429)
Amounts reclassified from accumulated other comprehensive  loss	0	0	0	0
Effect of exchange rates	0	0	0	0
Other comprehensive income (loss)	257	(442)	394	(429)
Balance as of end of period	(774)	(991)	(774)	(991)
Defined Benefit Plans Items [Member]
Changes in Accumulated Other Comprehensive Loss, By Component, Net of Tax
Balance as of beginning of period	(188)	(437)	(183)	(441)
Other comprehensive income (loss) before reclassifications	0	1	0	(2)
Amounts reclassified from accumulated other comprehensive  loss	(6)	4	(13)	11
Effect of exchange rates	1	2	3	2
Other comprehensive income (loss)	(5)	7	(10)	11
Balance as of end of period	(193)	(430)	(193)	(430)
Gains (Losses) on Cash Flow Hedges [Member]
Changes in Accumulated Other Comprehensive Loss, By Component, Net of Tax
Balance as of beginning of period	14	(23)	(8)	(5)
Other comprehensive income (loss) before reclassifications	12	(50)	49	(114)
Amounts reclassified from accumulated other comprehensive  loss	(30)	69	(45)	115
Effect of exchange rates	0	0	0	0
Other comprehensive income (loss)	(18)	19	4	1
Balance as of end of period	$ (4)	$ (4)	$ (4)	$ (4)