Other Comprehensive Earnings/Losses (Reclassifications) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net periodic benefit income, excluding service cost	$ (24)	$ (31)
(Income) losses from investments in equity securities	(295)	(170)
Pre-tax amounts reclassified from accumulated other comprehensive losses to net earnings	(2,129)	(1,787)
ABI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
(Income) losses from investments in equity securities	(313)	(205)
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	253	(7)
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)	(8)
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	1
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)
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	$ 255	$ 1