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Supplemental Equity and Comprehensive Income (Loss) Information | 12 Months Ended
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Dec. 31, 2023
Stockholders' Equity Note [Abstract] |
Supplemental Equity and Comprehensive Income (Loss) Information | NOTE 8. Supplemental Equity and Comprehensive Income (Loss) Information Common stock ($.01 par value per share) of 3 billion shares is authorized, with 944,033,056 shares issued as of December 31, 2023, 2022 and 2021. Preferred stock, without par value, of 10 million shares is authorized but unissued. Cash dividends declared and paid totaled $1.50, $1.49, and $1.48 per share for each quarter in 2023, 2022 and 2021, respectively, which resulted in total year declared and paid dividends of $6.00, $5.96, and $5.92 per share, respectively. The table below presents the changes in accumulated other comprehensive income (loss) attributable to 3M (AOCI), including the reclassifications out of AOCI 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, 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 (1) |  | (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) |
Other comprehensive income (loss), before tax: |  |  |  |  |  |  |  |
Amounts before reclassifications |  | (850) |  |  | 866 |  |  | 159 |  |  | 175 |
Amounts reclassified out |  | — |  |  | 458 |  |  | (98) |  |  | 360 |
Total other comprehensive income (loss), before tax |  | (850) |  |  | 1,324 |  |  | 61 |  |  | 535 |
Tax effect (1) |  | (35) |  |  | (409) |  |  | (14) |  |  | (458) |
Total other comprehensive income (loss), net of tax |  | (885) |  |  | 915 |  |  | 47 |  |  | 77 |
Balance at December 31, 2022, net of tax: |  | $ | (2,828) |  |  | $ | (3,838) |  |  | $ | (7) |  |  | $ | (6,673) |
Other comprehensive income (loss), before tax: |  |  |  |  |  |  |  |
Amounts before reclassifications |  | 277 |  |  | (763) |  |  | 81 |  |  | (405) |
Amounts reclassified out |  | 54 |  |  | 252 |  |  | (143) |  |  | 163 |
Total other comprehensive income (loss), before tax |  | 331 |  |  | (511) |  |  | (62) |  |  | (242) |
Tax effect (1) |  | (9) |  |  | 131 |  |  | 15 |  |  | 137 |
Total other comprehensive income (loss), net of tax |  | 322 |  |  | (380) |  |  | (47) |  |  | (105) |
Balance at December 31, 2023, net of tax: |  | $ | (2,506) |  |  | $ | (4,218) |  |  | $ | (54) |  |  | $ | (6,778) |
(1) Includes tax expense (benefit) reclassified out of AOCI related to the following:
| (millions) |  | 2023 |  | 2022 |  | 2021 |
| Defined benefit pension and postretirement plans adjustment |  | (60) |  |  | $ | (108) |  |  | $ | (160) |  |
| Cash flow hedging instruments, unrealized gain/loss |  | 33 |  |  | 23 |  |  | (11) |  |
Income taxes are not provided for foreign translation relating to permanent investments in international subsidiaries, but tax effects within cumulative translation do include impacts from items such as net investment hedge transactions. The Company uses the portfolio approach for releasing income tax effects from accumulated other comprehensive income. Additional details on the amounts reclassified from accumulated other comprehensive income (loss) into consolidated income (loss) include: •Cumulative translation adjustment: amounts were reclassified into selling, general and administrative expense. In 2023, this was associated with the Russia exit (see Note 17) and other country exits as part of streamlining 3M’s geographic footprint (see Note 5). •Defined benefit pension and postretirement plan adjustments: amounts were reclassified into other (expense) income, net (see Note 14). •Cash flow hedging instruments, unrealized gain (loss): foreign currency forward/option contacts amounts were reclassified into cost of sales; interest rate contract amounts were reclassified into interest expense (see Note 16). The tax effects, if applicable, associated with these reclassifications were reflected in provision for income taxes.

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