Stockholders' Equity Components of Stockholders' Equity (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss)
Unrealized translation		$ 19	$ (428)	$ 517
Change in AOCI		5	(380)	555
Defined Benefit Pension Plans
Accumulated Other Comprehensive Income (Loss)
Defined benefit and Other postretirement benefit plans, tax effect	[1]	(13)	(165)	(32)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax		38	(41)	121
Other Postretirement Benefit Plans
Accumulated Other Comprehensive Income (Loss)
Defined benefit and Other postretirement benefit plans, tax effect	[1]	10	(28)	3
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax		(25)	51	(8)
Kimberly-Clark Corporation
Accumulated Other Comprehensive Income (Loss)
Unrealized translation, before tax		21	(408)	398
Unrealized translation, tax effect	[1]	5	(25)	89
Unrealized translation		26	(433)	487
Unrecognized net actuarial loss and transition amount | Defined Benefit Pension Plans
Accumulated Other Comprehensive Income (Loss)
Funded status recognition, Defined benefit pension plans		(17)	(57)	159
Amortization, Defined benefit pension plans		44	47	56
Settlements and curtailments		46	134	7
Currency and other		(13)	29	(66)
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension Plans, before Tax		60	153	156
Unrecognized net actuarial loss and transition amount | Other Postretirement Benefit Plans
Accumulated Other Comprehensive Income (Loss)
Unrecognized net actuarial loss and transition amount and other		(35)	79	(11)
Unrecognized prior service cost/credit | Defined Benefit Pension Plans
Accumulated Other Comprehensive Income (Loss)
Settlements and curtailments		(1)	2	0
Amortization, Unrecognized prior service cost/credit		(5)	(8)	(8)
Currency and other		(2)	(1)	3
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension Plans, before Tax		(9)	(29)	(3)
Funded status recognition, Unrecognized prior service cost/credit		1	22	(2)
Cash Flow Hedges and Other
Accumulated Other Comprehensive Income (Loss)
Currency and other		(1)	(2)	(2)
Recognition of effective portion of hedges		(23)	56	(76)
Amortization		(16)	12	18
Cash flow hedges and other, tax effect	[1]	6	(23)	15
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax		$ (34)	43	$ (45)
Stranded tax effects reclassified from AOCI to Retained Earnings | Defined Benefit Pension Plans
Accumulated Other Comprehensive Income (Loss)
Defined benefit and Other postretirement benefit plans, tax effect			125
Stranded tax effects reclassified from AOCI to Retained Earnings | Other Postretirement Benefit Plans
Accumulated Other Comprehensive Income (Loss)
Defined benefit and Other postretirement benefit plans, tax effect			5
Stranded tax effects reclassified from AOCI to Retained Earnings | Kimberly-Clark Corporation
Accumulated Other Comprehensive Income (Loss)
Unrealized translation, tax effect			18
Stranded tax effects reclassified from AOCI to Retained Earnings | Cash Flow Hedges and Other
Accumulated Other Comprehensive Income (Loss)
Cash flow hedges and other, tax effect			$ 8

[1] The Tax effect for Unrealized translation, Defined benefit pension plans, Other postretirement benefit plans and Cash flow hedges and other includes reductions of $18, $125, $5 and $8, respectively, for stranded tax effects reclassified from AOCI to Retained earnings in 2018.