v3.22.4
Supplemental Equity and Comprehensive Income Information - AOCI Rollforward (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
AOCI Attributable to 3M, Net of Tax Roll Forward      
Balance at the beginning of the period $ 15,117 $ 12,931 $ 10,126
Other comprehensive income (loss), before tax:      
Total other comprehensive income (loss), net of tax 69 970 411
Balance at the end of the period 14,770 15,117 12,931
Total Accumulated Other Comprehensive Income (Loss)      
AOCI Attributable to 3M, Net of Tax Roll Forward      
Balance at the beginning of the period (6,750) (7,721) (8,134)
Other comprehensive income (loss), before tax:      
Amounts before reclassifications 175 903 (308)
Amounts reclassified out 360 705 548
Total other comprehensive income (loss), before tax 535 1,608 240
Tax effect (458) (637) 173
Total other comprehensive income (loss), net of tax 77 971 413
Balance at the end of the period (6,673) (6,750) (7,721)
Cumulative Translation Adjustment      
AOCI Attributable to 3M, Net of Tax Roll Forward      
Balance at the beginning of the period (1,943) (1,450) (1,899)
Other comprehensive income (loss), before tax:      
Amounts before reclassifications (850) (428) 387
Amounts reclassified out 0 0 0
Total other comprehensive income (loss), before tax (850) (428) 387
Tax effect (35) (65) 62
Total other comprehensive income (loss), net of tax (885) (493) 449
Balance at the end of the period (2,828) (1,943) (1,450)
Defined Benefit Pension and Postretirement Plans Adjustment      
AOCI Attributable to 3M, Net of Tax Roll Forward      
Balance at the beginning of the period (4,753) (6,098) (6,204)
Other comprehensive income (loss), before tax:      
Amounts before reclassifications 866 1,223 (582)
Amounts reclassified out 458 658 619
Total other comprehensive income (loss), before tax 1,324 1,881 37
Tax effect (409) (536) 69
Total other comprehensive income (loss), net of tax 915 1,345 106
Balance at the end of the period (3,838) (4,753) (6,098)
Cash Flow Hedging Instruments, Unrealized Gain (Loss)      
AOCI Attributable to 3M, Net of Tax Roll Forward      
Balance at the beginning of the period (54) (173) (31)
Other comprehensive income (loss), before tax:      
Amounts before reclassifications 159 108 (113)
Amounts reclassified out (98) 47 (71)
Total other comprehensive income (loss), before tax 61 155 (184)
Tax effect (14) (36) 42
Total other comprehensive income (loss), net of tax 47 119 (142)
Balance at the end of the period $ (7) $ (54) $ (173)