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Supplemental Equity and Comprehensive Income Information | 12 Months Ended
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Dec. 31, 2021
Stockholders' Equity Note [Abstract] |
Supplemental Equity and Comprehensive Income Information | Supplemental Equity and Comprehensive Income Information Common stock ($.01 par value per share) of 3 billion shares is authorized, with 944,033,056 shares issued as of December 31, 2021, 2020 and 2019. Preferred stock, without par value, of 10 million shares is authorized but unissued. Cash dividends declared and paid totaled $1.48, $1.47, and $1.44 per share for each quarter in 2021, 2020 and 2019, respectively, which resulted in total year declared and paid dividends of $5.92, $5.88, and $5.76 per share, respectively. In connection with 3M’s January 1, 2019 adoption of ASU No. 2018-2, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, and ASU No. 2016-2, Leases, the Company recorded an increase in retained earnings of approximately $0.9 billion (with offsetting increase to accumulated other comprehensive loss for the same amount) and $14 million, respectively. Changes in Accumulated Other Comprehensive Income (Loss) Attributable to 3M by Component
(Millions) |  | Cumulative Translation Adjustment |  | Defined Benefit Pension and Postretirement Plans Adjustment |  | Cash Flow Hedging Instruments, Unrealized Gain (Loss) |  | Total Accumulated Other Comprehensive Income (Loss)
Balance at December 31, 2018, net of tax: |  | $ | (2,098) |  |  | $ | (4,880) |  |  | $ | 64 |  |  | $ | (6,914) |
Impact of Adoption of ASU No. 2018-02 |  | (13) |  |  | (817) |  |  | (23) |  |  | (853) |
Other comprehensive income (loss), before tax: |  |  |  |  |  |  |  |
Amounts before reclassifications |  | 102 |  |  | (1,205) |  |  | (26) |  |  | (1,129) |
Amounts reclassified out |  | 142 |  |  | 505 |  |  | (70) |  |  | 577 |
Total other comprehensive income (loss), before tax |  | 244 |  |  | (700) |  |  | (96) |  |  | (552) |
Tax effect |  | (32) |  |  | 193 |  |  | 24 |  |  | 185 |
Total other comprehensive income (loss), net of tax |  | 212 |  |  | (507) |  |  | (72) |  |  | (367) |
Balance at December 31, 2019, net of tax: |  | (1,899) |  |  | (6,204) |  |  | (31) |  |  | (8,134) |
Other comprehensive income (loss), before tax: |  |  |  |  |  |  |  |
Amounts before reclassifications |  | 387 |  |  | (582) |  |  | (113) |  |  | (308) |
Amounts reclassified out |  | — |  |  | 619 |  |  | (71) |  |  | 548 |
Total other comprehensive income (loss), before tax |  | 387 |  |  | 37 |  |  | (184) |  |  | 240 |
Tax effect |  | 62 |  |  | 69 |  |  | 42 |  |  | 173 |
Total other comprehensive income (loss), net of tax |  | 449 |  |  | 106 |  |  | (142) |  |  | 413 |
Balance at December 31, 2020, net of tax: |  | $ | (1,450) |  |  | $ | (6,098) |  |  | $ | (173) |  |  | $ | (7,721) |
Other comprehensive income (loss), before tax: |  |  |  |  |  |  |  |
Amounts before reclassifications |  | (428) |  |  | 1,223 |  |  | 108 |  |  | 903 |
Amounts reclassified out |  | — |  |  | 658 |  |  | 47 |  |  | 705 |
Total other comprehensive income (loss), before tax |  | (428) |  |  | 1,881 |  |  | 155 |  |  | 1,608 |
Tax effect |  | (65) |  |  | (536) |  |  | (36) |  |  | (637) |
Total other comprehensive income (loss), net of tax |  | (493) |  |  | 1,345 |  |  | 119 |  |  | 971 |
Balance at December 31, 2021, net of tax: |  | $ | (1,943) |  |  | $ | (4,753) |  |  | $ | (54) |  |  | $ | (6,750) |
Income taxes are not provided for foreign translation relating to permanent investments in international subsidiaries, but tax effects within cumulative translation does include impacts from items such as net investment hedge transactions. Reclassification adjustments are made to avoid double counting in comprehensive income items that are subsequently recorded as part of net income. Reclassifications out of Accumulated Other Comprehensive Income Attributable to 3M
Details about Accumulated Other Comprehensive Income Components (Millions) |  | Amounts Reclassified from Accumulated Other Comprehensive Income |  | Location on Income Statement
Year ended December 31,
2021 |  | 2020 |  | 2019
Cumulative translation adjustment |  |  |  |  |  |  |  |
Deconsolidation of Venezuelan subsidiary |  | $ | — |  |  | $ | — |  |  | $ | (142) |  |  | Other (expense) income, net
Total before tax |  | — |  |  | — |  |  | (142) |  |  |
Tax effect |  | — |  |  | — |  |  | — |  |  | Provision for income taxes
Net of tax |  | — |  |  | — |  |  | (142) |  |  |
Defined benefit pension and postretirement plans adjustments |  |  |  |  |  |  |  |
Gains (losses) associated with defined benefit pension and postretirement plans amortization |  |  |  |  |  |  |  |
Transition asset |  | (2) |  |  | (2) |  |  | — |  |  | Other (expense) income, net
Prior service benefit |  | 60 |  |  | 62 |  |  | 69 |  |  | Other (expense) income, net
Net actuarial loss |  | (689) |  |  | (659) |  |  | (524) |  |  | Other (expense) income, net
Curtailments/Settlements |  | (27) |  |  | (20) |  |  | (48) |  |  | Other (expense) income, net
Deconsolidation of Venezuelan subsidiary |  | — |  |  | — |  |  | (2) |  |  | Other (expense) income, net
Total before tax |  | (658) |  |  | (619) |  |  | (505) |  |  |
Tax effect |  | 160 |  |  | 148 |  |  | 121 |  |  | Provision for income taxes
Net of tax |  | (498) |  |  | (471) |  |  | (384) |  |  |
Cash flow hedging instruments gains (losses) |  |  |  |  |  |  |  |
Foreign currency forward/option contracts |  | (38) |  |  | 80 |  |  | 74 |  |  | Cost of sales
Interest rate contracts |  | (9) |  |  | (9) |  |  | (4) |  |  | Interest expense
Total before tax |  | (47) |  |  | 71 |  |  | 70 |  |  |
Tax effect |  | 11 |  |  | (17) |  |  | (17) |  |  | Provision for income taxes
Net of tax |  | (36) |  |  | 54 |  |  | 53 |  |  |
Total reclassifications for the period, net of tax |  | $ | (534) |  |  | $ | (417) |  |  | $ | (473) |  |  |

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