Segment Information - Schedule of Segment Information (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Net sales	$ 4,015	$ 3,928	$ 3,866	$ 3,884	$ 3,811	$ 3,845	$ 3,886	$ 4,002	$ 15,693	$ 15,544	$ 15,454
Operating profit									3,554	3,694	3,707
Capital expenditures									335	436	553
Depreciation and amortization									519	511	475
Assets	$ 15,034				$ 12,161				$ 15,034	$ 12,161	$ 12,676
Percentage of corporate identifiable assets consisting of derivative instruments	2.00%				7.00%				2.00%	7.00%	5.00%
Percentage of corporate identifiable assets consisting of investments in equity securities	92.00%				88.00%				92.00%	88.00%	86.00%
Total long lived assets	$ 10,192				$ 8,259				$ 10,192	$ 8,259	$ 7,908
Oral, Personal and Home Care | United States
Segment Reporting Information [Line Items]
Net sales									3,166	3,091	2,865
Pet Nutrition | United States
Segment Reporting Information [Line Items]
Net sales									1,441	1,304	1,246
Operating Segments | Oral, Personal and Home Care
Segment Reporting Information [Line Items]
Net sales									13,168	13,156	13,162
Operating profit									3,505	3,616	3,841
Capital expenditures									223	309	402
Depreciation and amortization									358	351	323
Assets	13,809				11,068				13,809	11,068	11,600
Operating Segments | Oral, Personal and Home Care | North America
Segment Reporting Information [Line Items]
Net sales									3,424	3,348	3,117
Operating profit									982	1,037	1,043
Capital expenditures									43	53	74
Depreciation and amortization									94	88	58
Assets	3,576				3,310				3,576	3,310	2,608
Operating Segments | Oral, Personal and Home Care | Latin America
Segment Reporting Information [Line Items]
Net sales									3,606	3,605	3,887
Operating profit									963	995	1,171
Capital expenditures									90	131	127
Depreciation and amortization									84	82	82
Assets	2,384				2,225				2,384	2,225	2,423
Operating Segments | Oral, Personal and Home Care | Europe
Segment Reporting Information [Line Items]
Net sales									2,450	2,502	2,394
Operating profit									624	634	605
Capital expenditures									42	39	63
Depreciation and amortization									72	70	74
Assets	5,104				2,883				5,104	2,883	3,781
Operating Segments | Oral, Personal and Home Care | Asia Pacific
Segment Reporting Information [Line Items]
Net sales									2,707	2,734	2,781
Operating profit									749	777	842
Capital expenditures									40	75	125
Depreciation and amortization									100	103	101
Assets	2,155				2,148				2,155	2,148	2,244
Operating Segments | Oral, Personal and Home Care | Africa/Eurasia
Segment Reporting Information [Line Items]
Net sales									981	967	983
Operating profit									187	173	180
Capital expenditures									8	11	13
Depreciation and amortization									8	8	8
Assets	590				502				590	502	544
Operating Segments | Pet Nutrition
Segment Reporting Information [Line Items]
Net sales									2,525	2,388	2,292
Operating profit									703	680	677
Capital expenditures									41	35	33
Depreciation and amortization									55	53	53
Assets	1,175				1,033				1,175	1,033	1,026
Corporate
Segment Reporting Information [Line Items]
Operating profit									(654)	(602)	(811)
Capital expenditures									71	92	118
Depreciation and amortization									106	107	99
Assets	$ 50				$ 60				$ 50	$ 60	$ 50