Equity, Changes in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Changes in Accumulated Other Comprehensive Loss, By Component, Net of Tax
Beginning balance, accumulated other comprehensive loss, net of tax			$ 18,430
Other comprehensive income (loss) before reclassifications	$ (576)	$ (263)	(1,121)	$ (132)
Amounts reclassified from accumulated other comprehensive loss	4	12	130	47
Effect of exchange rates	0	2	2	1
Other comprehensive income (loss)	(572)	(249)	(989)	(84)
Ending balance, accumulated other comprehensive loss, net of tax	21,912		21,912
Accumulated Other Comprehensive Loss [Member]
Changes in Accumulated Other Comprehensive Loss, By Component, Net of Tax
Beginning balance, accumulated other comprehensive loss, net of tax	(1,425)	(1,089)	(1,008)	(1,254)
Ending balance, accumulated other comprehensive loss, net of tax	(1,997)	(1,338)	(1,997)	(1,338)
Foreign Currency Translation Adjustment [Member]
Changes in Accumulated Other Comprehensive Loss, By Component, Net of Tax
Beginning balance, accumulated other comprehensive loss, net of tax	(991)	(373)	(562)	(515)
Other comprehensive income (loss) before reclassifications	(606)	(255)	(1,035)	(113)
Amounts reclassified from accumulated other comprehensive loss	0	0	0	0
Effect of exchange rates	0	0	0	0
Other comprehensive income (loss)	(606)	(255)	(1,035)	(113)
Ending balance, accumulated other comprehensive loss, net of tax	(1,597)	(628)	(1,597)	(628)
Defined Benefit Plans Items [Member]
Changes in Accumulated Other Comprehensive Loss, By Component, Net of Tax
Beginning balance, accumulated other comprehensive loss, net of tax	(430)	(715)	(441)	(737)
Other comprehensive income (loss) before reclassifications	0	0	(2)	1
Amounts reclassified from accumulated other comprehensive loss	7	10	18	32
Effect of exchange rates	0	2	2	1
Other comprehensive income (loss)	7	12	18	34
Ending balance, accumulated other comprehensive loss, net of tax	(423)	(703)	(423)	(703)
Gains (Losses) on Cash Flow Hedges [Member]
Changes in Accumulated Other Comprehensive Loss, By Component, Net of Tax
Beginning balance, accumulated other comprehensive loss, net of tax	(4)	(1)	(5)	(2)
Other comprehensive income (loss) before reclassifications	30	(8)	(84)	(20)
Amounts reclassified from accumulated other comprehensive loss	(3)	2	112	15
Effect of exchange rates	0	0	0	0
Other comprehensive income (loss)	27	(6)	28	(5)
Ending balance, accumulated other comprehensive loss, net of tax	$ 23	$ (7)	$ 23	$ (7)