Segment Information - Schedule of Segment Information (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Net sales	$ 4,324	$ 4,153	$ 3,897	$ 4,097	$ 4,015	$ 3,928	$ 3,866	$ 3,884	$ 16,471	$ 15,693	$ 15,544
Operating profit									3,885	3,554	3,694
Capital expenditures									409	335	436
Depreciation and amortization									539	519	511
Identifiable assets	$ 15,920				$ 15,034				$ 15,920	$ 15,034	$ 12,161
Percentage of corporate identifiable assets consisting of investments in equity securities	95.00%				92.00%				95.00%	92.00%	88.00%
Percentage of corporate identifiable assets consisting of derivative instruments					2.00%					2.00%	7.00%
Total long lived assets	$ 10,911				$ 10,192				$ 10,911	$ 10,192	$ 8,259
Oral, Personal and Home Care | United States
Segment Reporting Information [Line Items]
Net sales									3,447	3,166	3,091
Pet Nutrition | United States
Segment Reporting Information [Line Items]
Net sales									1,712	1,441	1,304
Operating Segments | Oral, Personal and Home Care
Segment Reporting Information [Line Items]
Net sales									13,588	13,168	13,156
Operating profit									3,594	3,505	3,616
Capital expenditures									274	223	309
Depreciation and amortization									380	358	351
Identifiable assets	14,646				13,809				14,646	13,809	11,068
Operating Segments | Oral, Personal and Home Care | North America
Segment Reporting Information [Line Items]
Net sales									3,741	3,424	3,348
Operating profit									988	982	1,037
Capital expenditures									65	43	53
Depreciation and amortization									101	94	88
Identifiable assets	4,132				3,576				4,132	3,576	3,310
Operating Segments | Oral, Personal and Home Care | Latin America
Segment Reporting Information [Line Items]
Net sales									3,418	3,606	3,605
Operating profit									975	963	995
Capital expenditures									104	90	131
Depreciation and amortization									81	84	82
Identifiable assets	2,251				2,384				2,251	2,384	2,225
Operating Segments | Oral, Personal and Home Care | Europe
Segment Reporting Information [Line Items]
Net sales									2,747	2,450	2,502
Operating profit									652	624	634
Capital expenditures									41	42	39
Depreciation and amortization									94	72	70
Identifiable assets	5,386				5,104				5,386	5,104	2,883
Operating Segments | Oral, Personal and Home Care | Asia Pacific
Segment Reporting Information [Line Items]
Net sales									2,701	2,707	2,734
Operating profit									773	749	777
Capital expenditures									51	40	75
Depreciation and amortization									95	100	103
Identifiable assets	2,272				2,155				2,272	2,155	2,148
Operating Segments | Oral, Personal and Home Care | Africa/Eurasia
Segment Reporting Information [Line Items]
Net sales									981	981	967
Operating profit									206	187	173
Capital expenditures									13	8	11
Depreciation and amortization									9	8	8
Identifiable assets	605				590				605	590	502
Operating Segments | Pet Nutrition
Segment Reporting Information [Line Items]
Net sales									2,883	2,525	2,388
Operating profit									793	703	680
Capital expenditures									56	41	35
Depreciation and amortization									58	55	53
Identifiable assets	1,210				1,175				1,210	1,175	1,033
Corporate
Segment Reporting Information [Line Items]
Operating profit									(502)	(654)	(602)
Capital expenditures									79	71	92
Depreciation and amortization									101	106	107
Identifiable assets	$ 64				$ 50				$ 64	$ 50	$ 60