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Supplemental Equity and Comprehensive Income Information (Tables) | 9 Months Ended
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Sep. 30, 2018
Supplemental Equity and Comprehensive Income Information |
Consolidated Statement of Changes in Equity | Three months ended September 30, 2018
|  |  |  |  | 3M Company Shareholders |  |  |  |
|  |  |  |  | Common |  |  |  |  |  |  |  | Accumulated |  |  |  |
|  |  |  |  | Stock and |  |  |  |  |  |  |  | Other |  |  |  |
|  |  |  |  | Additional |  |  |  |  |  |  |  | Comprehensive |  | Non- |
|  |  |  |  | Paid-in |  | Retained |  | Treasury |  | Income |  | controlling |
(Millions) |  | Total |  | Capital |  | Earnings |  | Stock |  | (Loss) |  | Interest |
Balance at June 30, 2018 |  | $ | 10,428 |  | $ | 5,559 |  | $ | 39,442 |  | $ | (27,617) |  | $ | (7,019) |  | $ | 63 |
Net income |  |  | 1,546 |  |  |  |  |  | 1,543 |  |  |  |  |  |  |  |  | 3 |
Other comprehensive income (loss), net of tax: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cumulative translation adjustment |  |  | (112) |  |  |  |  |  |  |  |  |  |  |  | (109) |  |  | (3) |
Defined benefit pension and post-retirement plans adjustment |  |  | 114 |  |  |  |  |  |  |  |  |  |  |  | 114 |  |  | — |
Cash flow hedging instruments - unrealized gain (loss) |  |  | 46 |  |  |  |  |  |  |  |  |  |  |  | 46 |  |  | — |
Total other comprehensive income (loss), net of tax |  |  | 48 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends declared |  |  | (794) |  |  |  |  |  | (794) |  |  |  |  |  |  |  |  |  |
Stock-based compensation |  |  | 47 |  |  | 47 |  |  |  |  |  |  |  |  |  |  |  |  |
Reacquired stock |  |  | (1,058) |  |  |  |  |  |  |  |  | (1,058) |  |  |  |  |  |  |
Issuances pursuant to stock option and benefit plans |  |  | 94 |  |  |  |  |  | (71) |  |  | 165 |  |  |  |  |  |  |
Balance at September 30, 2018 |  | $ | 10,311 |  | $ | 5,606 |  | $ | 40,120 |  | $ | (28,510) |  | $ | (6,968) |  | $ | 63 |
Nine months ended September 30, 2018
|  |  |  |  | 3M Company Shareholders |  |  |  |
|  |  |  |  | Common |  |  |  |  |  |  |  | Accumulated |  |  |  |
|  |  |  |  | Stock and |  |  |  |  |  |  |  | Other |  |  |  |
|  |  |  |  | Additional |  |  |  |  |  |  |  | Comprehensive |  | Non- |
|  |  |  |  | Paid-in |  | Retained |  | Treasury |  | Income |  | controlling |
(Millions) |  | Total |  | Capital |  | Earnings |  | Stock |  | (Loss) |  | Interest |
Balance at December 31, 2017 |  | $ | 11,622 |  | $ | 5,361 |  | $ | 39,115 |  | $ | (25,887) |  | $ | (7,026) |  | $ | 59 |
Net income |  |  | 4,014 |  |  |  |  |  | 4,002 |  |  |  |  |  |  |  |  | 12 |
Other comprehensive income (loss), net of tax: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cumulative translation adjustment |  |  | (441) |  |  |  |  |  |  |  |  |  |  |  | (433) |  |  | (8) |
Defined benefit pension and post-retirement plans adjustment |  |  | 344 |  |  |  |  |  |  |  |  |  |  |  | 344 |  |  | — |
Cash flow hedging instruments - unrealized gain (loss) |  |  | 147 |  |  |  |  |  |  |  |  |  |  |  | 147 |  |  | — |
Total other comprehensive income (loss), net of tax |  |  | 50 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends declared |  |  | (2,406) |  |  |  |  |  | (2,406) |  |  |  |  |  |  |  |  |  |
Stock-based compensation |  |  | 245 |  |  | 245 |  |  |  |  |  |  |  |  |  |  |  |  |
Reacquired stock |  |  | (3,621) |  |  |  |  |  |  |  |  | (3,621) |  |  |  |  |  |  |
Issuances pursuant to stock option and benefit plans |  |  | 407 |  |  |  |  |  | (591) |  |  | 998 |  |  |  |  |  |  |
Balance at September 30, 2018 |  | $ | 10,311 |  | $ | 5,606 |  | $ | 40,120 |  | $ | (28,510) |  | $ | (6,968) |  | $ | 63 |
Three months ended September 30, 2017
|  |  |  |  | 3M Company Shareholders |  |  |  |
|  |  |  |  | Common |  |  |  |  |  |  |  | Accumulated |  |  |  |
|  |  |  |  | Stock and |  |  |  |  |  |  |  | Other |  |  |  |
|  |  |  |  | Additional |  |  |  |  |  |  |  | Comprehensive |  | Non- |
|  |  |  |  | Paid-in |  | Retained |  | Treasury |  | Income |  | controlling |
(Millions) |  | Total |  | Capital |  | Earnings |  | Stock |  | (Loss) |  | Interest |
Balance at June 30, 2017 |  | $ | 11,644 |  | $ | 5,253 |  | $ | 38,793 |  | $ | (25,466) |  | $ | (6,989) |  | $ | 53 |
Net income |  |  | 1,433 |  |  |  |  |  | 1,429 |  |  |  |  |  |  |  |  | 4 |
Other comprehensive income (loss), net of tax: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cumulative translation adjustment |  |  | 44 |  |  |  |  |  |  |  |  |  |  |  | 45 |  |  | (1) |
Defined benefit pension and post-retirement plans adjustment |  |  | 80 |  |  |  |  |  |  |  |  |  |  |  | 80 |  |  | — |
Cash flow hedging instruments - unrealized gain (loss) |  |  | (49) |  |  |  |  |  |  |  |  |  |  |  | (49) |  |  | — |
Total other comprehensive income (loss), net of tax |  |  | 75 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends declared |  |  | (701) |  |  |  |  |  | (701) |  |  |  |  |  |  |  |  |  |
Stock-based compensation |  |  | 58 |  |  | 58 |  |  |  |  |  |  |  |  |  |  |  |  |
Reacquired stock |  |  | (394) |  |  |  |  |  |  |  |  | (394) |  |  |  |  |  |  |
Issuances pursuant to stock option and benefit plans |  |  | 87 |  |  |  |  |  | (67) |  |  | 154 |  |  |  |  |  |  |
Balance at September 30, 2017 |  | $ | 12,202 |  | $ | 5,311 |  | $ | 39,454 |  | $ | (25,706) |  | $ | (6,913) |  | $ | 56 |
Nine months ended September 30, 2017
|  |  |  |  | 3M Company Shareholders |  |  |  |
|  |  |  |  | Common |  |  |  |  |  |  |  | Accumulated |  |  |  |
|  |  |  |  | Stock and |  |  |  |  |  |  |  | Other |  |  |  |
|  |  |  |  | Additional |  |  |  |  |  |  |  | Comprehensive |  | Non- |
|  |  |  |  | Paid-in |  | Retained |  | Treasury |  | Income |  | controlling |
(Millions) |  | Total |  | Capital |  | Earnings |  | Stock |  | (Loss) |  | Interest |
Balance at December 31, 2016 |  | $ | 10,343 |  | $ | 5,070 |  | $ | 37,907 |  | $ | (25,434) |  | $ | (7,245) |  | $ | 45 |
Net income |  |  | 4,344 |  |  |  |  |  | 4,335 |  |  |  |  |  |  |  |  | 9 |
Other comprehensive income (loss), net of tax: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cumulative translation adjustment |  |  | 269 |  |  |  |  |  |  |  |  |  |  |  | 267 |  |  | 2 |
Defined benefit pension and post-retirement plans adjustment |  |  | 241 |  |  |  |  |  |  |  |  |  |  |  | 241 |  |  | — |
Cash flow hedging instruments - unrealized gain (loss) |  |  | (176) |  |  |  |  |  |  |  |  |  |  |  | (176) |  |  | — |
Total other comprehensive income (loss), net of tax |  |  | 334 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends declared |  |  | (2,104) |  |  |  |  |  | (2,104) |  |  |  |  |  |  |  |  |  |
Stock-based compensation |  |  | 241 |  |  | 241 |  |  |  |  |  |  |  |  |  |  |  |  |
Reacquired stock |  |  | (1,547) |  |  |  |  |  |  |  |  | (1,547) |  |  |  |  |  |  |
Issuances pursuant to stock option and benefit plans |  |  | 591 |  |  |  |  |  | (684) |  |  | 1,275 |  |  |  |  |  |  |
Balance at September 30, 2017 |  | $ | 12,202 |  | $ | 5,311 |  | $ | 39,454 |  | $ | (25,706) |  | $ | (6,913) |  | $ | 56 |
Changes in Accumulated Other Comprehensive Income (Loss) Attributable to 3M | Three months ended September 30, 2018
|  |  |  |  |  |  |  |  |  |  | Total |
|  |  |  |  | Defined Benefit |  | Cash Flow |  | Accumulated |
|  |  |  |  | Pension and |  | Hedging |  | Other |
|  | Cumulative |  | Postretirement |  | Instruments, |  | Comprehensive |
|  | Translation |  | Plans |  | Unrealized |  | Income |
(Millions) |  | Adjustment |  | Adjustment |  | Gain (Loss) |  | (Loss) |
Balance at June 30, 2018, net of tax: |  | $ | (1,962) |  | $ | (5,046) |  | $ | (11) |  | $ | (7,019) |
Other comprehensive income (loss), before tax: |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts before reclassifications |  |  | (110) |  |  | — |  |  | 22 |  |  | (88) |
Amounts reclassified out |  |  | — |  |  | 150 |  |  | 37 |  |  | 187 |
Total other comprehensive income (loss), before tax |  |  | (110) |  |  | 150 |  |  | 59 |  |  | 99 |
Tax effect |  |  | 1 |  |  | (36) |  |  | (13) |  |  | (48) |
Total other comprehensive income (loss), net of tax |  |  | (109) |  |  | 114 |  |  | 46 |  |  | 51 |
Balance at September 30, 2018, net of tax: |  | $ | (2,071) |  | $ | (4,932) |  | $ | 35 |  | $ | (6,968) |
Nine months ended September 30, 2018
|  |  |  |  |  |  |  |  |  |  | Total |
|  |  |  |  | Defined Benefit |  | Cash Flow |  | Accumulated |
|  |  |  |  | Pension and |  | Hedging |  | Other |
|  | Cumulative |  | Postretirement |  | Instruments, |  | Comprehensive |
|  | Translation |  | Plans |  | Unrealized |  | Income |
(Millions) |  | Adjustment |  | Adjustment |  | Gain (Loss) |  | (Loss) |
Balance at December 31, 2017, net of tax: |  | $ | (1,638) |  | $ | (5,276) |  | $ | (112) |  | $ | (7,026) |
Other comprehensive income (loss), before tax: |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts before reclassifications |  |  | (392) |  |  | — |  |  | 122 |  |  | (270) |
Amounts reclassified out |  |  | — |  |  | 452 |  |  | 99 |  |  | 551 |
Total other comprehensive income (loss), before tax |  |  | (392) |  |  | 452 |  |  | 221 |  |  | 281 |
Tax effect |  |  | (41) |  |  | (108) |  |  | (74) |  |  | (223) |
Total other comprehensive income (loss), net of tax |  |  | (433) |  |  | 344 |  |  | 147 |  |  | 58 |
Balance at September 30, 2018, net of tax: |  | $ | (2,071) |  | $ | (4,932) |  | $ | 35 |  | $ | (6,968) |
Three months ended September 30, 2017
|  |  |  |  |  |  |  |  |  |  | Total |
|  |  |  |  | Defined Benefit |  | Cash Flow |  | Accumulated |
|  |  |  |  | Pension and |  | Hedging |  | Other |
|  | Cumulative |  | Postretirement |  | Instruments, |  | Comprehensive |
|  | Translation |  | Plans |  | Unrealized |  | Income |
(Millions) |  | Adjustment |  | Adjustment |  | Gain (Loss) |  | (Loss) |
Balance at June 30, 2017, net of tax: |  | $ | (1,786) |  | $ | (5,167) |  | $ | (36) |  | $ | (6,989) |
Other comprehensive income (loss), before tax: |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts before reclassifications |  |  | (29) |  |  | — |  |  | (80) |  |  | (109) |
Amounts reclassified out |  |  | — |  |  | 119 |  |  | 2 |  |  | 121 |
Total other comprehensive income (loss), before tax |  |  | (29) |  |  | 119 |  |  | (78) |  |  | 12 |
Tax effect |  |  | 74 |  |  | (39) |  |  | 29 |  |  | 64 |
Total other comprehensive income (loss), net of tax |  |  | 45 |  |  | 80 |  |  | (49) |  |  | 76 |
Balance at September 30, 2017, net of tax: |  | $ | (1,741) |  | $ | (5,087) |  | $ | (85) |  | $ | (6,913) |
Nine months ended September 30, 2017
|  |  |  |  |  |  |  |  |  |  | Total |
|  |  |  |  | Defined Benefit |  | Cash Flow |  | Accumulated |
|  |  |  |  | Pension and |  | Hedging |  | Other |
|  | Cumulative |  | Postretirement |  | Instruments, |  | Comprehensive |
|  | Translation |  | Plans |  | Unrealized |  | Income |
(Millions) |  | Adjustment |  | Adjustment |  | Gain (Loss) |  | (Loss) |
Balance at December 31, 2016, net of tax: |  | $ | (2,008) |  | $ | (5,328) |  | $ | 91 |  | $ | (7,245) |
Other comprehensive income (loss), before tax: |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts before reclassifications |  |  | 30 |  |  | — |  |  | (255) |  |  | (225) |
Amounts reclassified out |  |  | — |  |  | 357 |  |  | (21) |  |  | 336 |
Total other comprehensive income (loss), before tax |  |  | 30 |  |  | 357 |  |  | (276) |  |  | 111 |
Tax effect |  |  | 237 |  |  | (116) |  |  | 100 |  |  | 221 |
Total other comprehensive income (loss), net of tax |  |  | 267 |  |  | 241 |  |  | (176) |  |  | 332 |
Balance at September 30, 2017, net of tax |  | $ | (1,741) |  | $ | (5,087) |  | $ | (85) |  | $ | (6,913) |
Reclassifications Out of Accumulated Other Comprehensive Income |
|  | Amount Reclassified from |  |  |
Details about Accumulated Other |  | Accumulated Other Comprehensive Income |  |  |
Comprehensive Income Components |  | Three months ended September 30, |  | Nine months ended September 30, |  | Location on Income |
(Millions) |  | 2018 |  | 2017 |  | 2018 |  | 2017 |  | Statement |
Gains (losses) associated with defined benefit pension and postretirement plans amortization |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Prior service benefit |  | $ | 20 |  | $ | 21 |  | $ | 58 |  | $ | 65 |  | See Note 11 |
Net actuarial loss |  |  | (170) |  |  | (140) |  |  | (510) |  |  | (422) |  | See Note 11 |
Total before tax |  |  | (150) |  |  | (119) |  |  | (452) |  |  | (357) |  |  |
Tax effect |  |  | 36 |  |  | 39 |  |  | 108 |  |  | 116 |  | Provision for income taxes |
Net of tax |  | $ | (114) |  | $ | (80) |  | $ | (344) |  | $ | (241) |  |  |
Cash flow hedging instruments gains (losses) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency forward/option contracts |  | $ | (37) |  | $ | (2) |  | $ | (99) |  | $ | 21 |  | Cost of sales |
Interest rate swap contracts |  |  | — |  |  | — |  |  | — |  |  | — |  | Interest expense |
Total before tax |  |  | (37) |  |  | (2) |  |  | (99) |  |  | 21 |  |  |
Tax effect |  |  | 8 |  |  | — |  |  | 22 |  |  | (8) |  | Provision for income taxes |
Net of tax |  | $ | (29) |  | $ | (2) |  | $ | (77) |  | $ | 13 |  |  |
Total reclassifications for the period, net of tax |  | $ | (143) |  | $ | (82) |  | $ | (421) |  | $ | (228) |  |  |

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