Other Comprehensive Earnings/Losses (Changes in Each Component of Accumulated Other Comprehensive Losses) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	$ (3,490)	$ (3,923)	$ (1,606)
Other comprehensive earnings (losses), net of deferred income taxes	273	98	285
Ending balance	(2,188)	(3,490)	(3,923)
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(2,673)	(2,771)	(3,056)
Other comprehensive earnings (losses) before reclassifications	115	102	387
Deferred income taxes	(37)	(17)	(100)
Other comprehensive earnings (losses) before reclassifications, net of deferred income taxes	78	85	287
Amounts reclassified to net earnings	244	13	2
Deferred income taxes	(49)	0	(4)
Amounts reclassified to net earnings, net of deferred income taxes	195	13	(2)
Other comprehensive earnings (losses), net of deferred income taxes	273	98	285
Ending balance	(2,400)	(2,673)	(2,771)
Benefit Plans [Member]
Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(1,493)	(1,436)	(1,612)
Other comprehensive earnings (losses) before reclassifications	142	(48)	145
Deferred income taxes	(36)	9	(35)
Other comprehensive earnings (losses) before reclassifications, net of deferred income taxes	106	(39)	110
Amounts reclassified to net earnings	(7)	(26)	88
Deferred income taxes	2	8	(22)
Amounts reclassified to net earnings, net of deferred income taxes	(5)	(18)	66
Other comprehensive earnings (losses), net of deferred income taxes	101	(57)	176
Ending balance	(1,392)	(1,493)	(1,436)
ABI [Member]
Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(1,195)	(1,369)	(1,512)
Other comprehensive earnings (losses) before reclassifications	(22)	178	275
Deferred income taxes	(1)	(35)	(65)
Other comprehensive earnings (losses) before reclassifications, net of deferred income taxes	(23)	143	210
Amounts reclassified to net earnings	251	39	(85)
Deferred income taxes	(51)	(8)	18
Amounts reclassified to net earnings, net of deferred income taxes	200	31	(67)
Other comprehensive earnings (losses), net of deferred income taxes	177	174	143
Ending balance	(1,018)	(1,195)	(1,369)
Currency Translation Adjustments and Other [Member]
Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	15	34	68
Other comprehensive earnings (losses) before reclassifications	(5)	(28)	(33)
Deferred income taxes	0	9	0
Other comprehensive earnings (losses) before reclassifications, net of deferred income taxes	(5)	(19)	(33)
Amounts reclassified to net earnings	0	0	(1)
Deferred income taxes	0	0	0
Amounts reclassified to net earnings, net of deferred income taxes	0	0	(1)
Other comprehensive earnings (losses), net of deferred income taxes	(5)	(19)	(34)
Ending balance	$ 10	$ 15	$ 34