Other Comprehensive Earnings/Losses (Reclassifications) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net periodic benefit income, excluding service cost	$ (25)	$ (33)	$ (74)	$ (95)
(Income) losses from investments in equity securities	(116)	(58)	(530)	(355)
Pre-tax amounts reclassified from accumulated other comprehensive losses to net earnings	(2,293)	(2,166)	(8,225)	(6,070)
ABI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
(Income) losses from investments in equity securities	(121)	(61)	(555)	(401)
Reclassification from AOCI			243
Reclassification adjustment from AOCI, equity method investment, before tax			285
Net investment hedge, gain (loss), reclassification, before tax			42
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Pre-tax amounts reclassified from accumulated other comprehensive losses to net earnings	(1)	(21)	253	(26)
Benefit Plans [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net periodic benefit income, excluding service cost	(2)	(7)	(5)	(21)
Net loss [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net periodic benefit income, excluding service cost	7	2	21	5
Prior service cost/credit [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net periodic benefit income, excluding service cost	(9)	(9)	(26)	(26)
ABI [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
(Income) losses from investments in equity securities	$ 1	$ (14)	$ 258	$ (5)