Restructuring and Related Activities (Details) - USD ($) $ in Millions	12 Months Ended				36 Months Ended
	Dec. 31, 2020		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2020
Restructuring Cost and Reserve
Asset impairments	$ 17		$ 0	$ 74
Provision for income taxes	(676)		(576)	(471)
2018 Global Restructuring Program
Restructuring Cost and Reserve
Nonoperating expense			1
Provision for income taxes	(94)		(118)	(243)
2018 Global Restructuring Program | Before Tax
Restructuring Cost and Reserve
Restructuring Charges	(419)		(366)	(1,036)	$ (1,800)
2018 Global Restructuring Program | After Tax
Restructuring Cost and Reserve
Restructuring Charges	(325)		(248)	(793)	$ (1,400)
2018 Global Restructuring Program | After Tax | Equity Companies and Noncontrolling Interests
Restructuring Cost and Reserve
Restructuring Charges	2		0	10
2018 Global Restructuring Program | After Tax | Kimberly-Clark Corporation
Restructuring Cost and Reserve
Restructuring Charges	(323)		(248)	(783)
2018 Global Restructuring Program | Cost of Sales | Before Tax
Restructuring Cost and Reserve
Charges (adjustments) for workforce reductions	10		31	149
Asset impairments	17		0	74
Incremental depreciation	94		235	172
Other exit costs	99		96	34
Restructuring Charges	(283)		(416)	(541)
2018 Global Restructuring Program | Cost of Sales | Before Tax | Asset write-offs
Restructuring Cost and Reserve
Restructuring Charges	(63)		(54)	(112)
2018 Global Restructuring Program | Marketing, Research and General Expenses | Before Tax
Restructuring Cost and Reserve
Charges (adjustments) for workforce reductions	13		(12)	243
Other exit costs	96		111	137
Restructuring Charges	(109)		(99)	(380)
2018 Global Restructuring Program | Other (income) and expense, net
Restructuring Cost and Reserve
Restructuring Charges			194	12
2018 Global Restructuring Program | Other (income) and expense, net | Before Tax
Restructuring Cost and Reserve
Restructuring Charges	(9)		(194)	(12)
2018 Global Restructuring Program | Nonoperating (income) expense | Before Tax
Restructuring Cost and Reserve
Nonoperating expense	$ 36	[1]	$ 45	$ 127

[1] Represents non-cash pension settlement and curtailment charges resulting from restructuring actions, primarily in the U.S., United Kingdom and Canada.