Segment Information - Schedule of Segment Information (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Net sales	$ 3,811	$ 3,845	$ 3,886	$ 4,002	$ 3,892	$ 3,974	$ 3,826	$ 3,762	$ 15,544	$ 15,454	$ 15,195
Operating profit									3,694	3,707	3,955
Capital expenditures									436	553	593
Depreciation and amortization									511	475	443
Assets	$ 12,161				$ 12,676				$ 12,161	$ 12,676	$ 12,123
Percentage of corporate identifiable assets consisting of derivative instruments	7.00%				5.00%				7.00%	5.00%	24.00%
Percentage of corporate identifiable assets consisting of investments in equity securities	88.00%				86.00%				88.00%	86.00%	68.00%
Total long lived assets	$ 8,259				$ 7,908				$ 8,259	$ 7,908	$ 7,642
Oral, Personal and Home Care | United States
Segment Reporting Information [Line Items]
Net sales									3,091	2,865	2,932
Pet Nutrition | United States
Segment Reporting Information [Line Items]
Net sales									1,304	1,246	1,243
Operating Segments | Oral, Personal and Home Care
Segment Reporting Information [Line Items]
Net sales									13,156	13,162	12,931
Operating profit									3,616	3,841	3,887
Capital expenditures									309	402	433
Depreciation and amortization									351	323	297
Assets	11,068				11,600				11,068	11,600	11,058
Operating Segments | Oral, Personal and Home Care | North America
Segment Reporting Information [Line Items]
Net sales									3,348	3,117	3,183
Operating profit									1,037	1,043	1,087
Capital expenditures									53	74	151
Depreciation and amortization									88	58	54
Assets	3,310				2,608				3,310	2,608	2,685
Operating Segments | Oral, Personal and Home Care | Latin America
Segment Reporting Information [Line Items]
Net sales									3,605	3,887	3,650
Operating profit									995	1,171	1,139
Capital expenditures									131	127	94
Depreciation and amortization									82	82	76
Assets	2,225				2,423				2,225	2,423	2,314
Operating Segments | Oral, Personal and Home Care | Europe
Segment Reporting Information [Line Items]
Net sales									2,502	2,394	2,342
Operating profit									634	605	586
Capital expenditures									39	63	51
Depreciation and amortization									70	74	64
Assets	2,883				3,781				2,883	3,781	3,554
Operating Segments | Oral, Personal and Home Care | Asia Pacific
Segment Reporting Information [Line Items]
Net sales									2,734	2,781	2,796
Operating profit									777	842	888
Capital expenditures									75	125	120
Depreciation and amortization									103	101	96
Assets	2,148				2,244				2,148	2,244	2,006
Operating Segments | Oral, Personal and Home Care | Africa/Eurasia
Segment Reporting Information [Line Items]
Net sales									967	983	960
Operating profit									173	180	187
Capital expenditures									11	13	17
Depreciation and amortization									8	8	7
Assets	502				544				502	544	499
Operating Segments | Pet Nutrition
Segment Reporting Information [Line Items]
Net sales									2,388	2,292	2,264
Operating profit									680	677	677
Capital expenditures									35	33	38
Depreciation and amortization									53	53	53
Assets	1,033				1,026				1,033	1,026	1,009
Corporate
Segment Reporting Information [Line Items]
Operating profit									(602)	(811)	(609)
Capital expenditures									92	118	122
Depreciation and amortization									107	99	93
Assets	$ 60				$ 50				$ 60	$ 50	$ 56