Investments in Equity Securities (Summary of Financial Data in ABI) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Sep. 30, 2021	Sep. 30, 2020
Schedule of Equity Method Investments [Line Items]
Net revenues	$ 26,013	$ 26,153	$ 25,110
Gross profit	13,992	13,023	12,711
Earnings (losses) from continuing operations	3,824	6,890	766
Net earnings (losses)	2,475	4,454	(1,298)
Net earnings (losses) attributable to equity investments	0	(13)	(5)
Current assets	6,083	7,117
Current liabilities	8,579	9,063
Noncontrolling interests	0	40
ABI [Member]
Schedule of Equity Method Investments [Line Items]
Net revenues	52,864	48,294	54,187
Gross profit	30,653	28,438	33,735
Earnings (losses) from continuing operations	7,434	4,265	10,530
Net earnings (losses)	7,434	4,266	10,530
Net earnings (losses) attributable to equity investments	5,780	3,323	9,189
Current assets				$ 21,593	$ 28,672
Long-term assets				190,082	185,106
Current liabilities				33,540	34,884
Long-term liabilities				105,973	117,400
Convertible Preferred Stock				0	0
Noncontrolling interests				11,356	8,459
Other Investments [Member]
Schedule of Equity Method Investments [Line Items]
Net revenues	1,313	37	21
Gross profit	757	(31)	10
Earnings (losses) from continuing operations	(800)	99	1,117
Net earnings (losses)	(800)	98	1,117
Net earnings (losses) attributable to equity investments	$ (798)	$ 100	$ 1,117
Current assets				1,882	1,394
Long-term assets				1,049	525
Current liabilities				451	143
Long-term liabilities				2,277	12
Convertible Preferred Stock				715	0
Noncontrolling interests				$ (3)	$ (3)