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Stockholders' Equity Components of Stockholders' Equity (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) |  |  |  |
Unrealized translation |  | $ 129 | $ 19 | $ (428)
Change in AOCI |  | 122 | 5 | (380)
Defined Benefit Pension Plans |  |  |  |
Accumulated Other Comprehensive Income (Loss) |  |  |  |
Defined benefit and Other postretirement benefit plans, tax effect | [1] | (20) | (13) | (165)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax |  | 67 | 38 | (41)
Other Postretirement Benefit Plans |  |  |  |
Accumulated Other Comprehensive Income (Loss) |  |  |  |
Defined benefit and Other postretirement benefit plans, tax effect | [1] | 8 | 10 | (28)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax |  | (27) | (25) | 51
Kimberly-Clark Corporation |  |  |  |
Accumulated Other Comprehensive Income (Loss) |  |  |  |
Unrealized translation, before tax |  | 98 | 21 | (408)
Unrealized translation, tax effect | [1] | 16 | 5 | (25)
Unrealized translation |  | 114 | 26 | (433)
Unrecognized net actuarial loss and transition amount | Defined Benefit Pension Plans |  |  |  |
Accumulated Other Comprehensive Income (Loss) |  |  |  |
Funded status recognition, Defined benefit pension plans |  | 24 | (17) | (57)
Amortization, Defined benefit pension plans |  | 41 | 44 | 47
Settlements and curtailments |  | 49 | 46 | 134
Currency and other |  | (26) | (13) | 29
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension Plans, before Tax |  | 88 | 60 | 153
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) | (35) | 79
Unrecognized prior service cost/credit | Defined Benefit Pension Plans |  |  |  |
Accumulated Other Comprehensive Income (Loss) |  |  |  |
Settlements and curtailments |  | 0 | (1) | 2
Amortization, Unrecognized prior service cost/credit |  | (4) | (5) | (8)
Currency and other |  | 1 | (2) | (1)
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension Plans, before Tax |  | (1) | (9) | (29)
Funded status recognition, Unrecognized prior service cost/credit |  | (2) | 1 | 22
Cash Flow Hedges and Other |  |  |  |
Accumulated Other Comprehensive Income (Loss) |  |  |  |
Currency and other |  | (5) | (1) | (2)
Recognition of effective portion of hedges |  | (32) | (23) | 56
Amortization |  | (2) | (16) | 12
Cash flow hedges and other, tax effect | [1] | 7 | 6 | (23)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax |  | $ (32) | $ (34) | 43
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.

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