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Significant Accounting Policies | 9 Months Ended
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Sep. 30, 2021
Accounting Policies [Abstract] |
Significant Accounting Policies | Significant Accounting Policies Basis of Presentation The interim consolidated financial statements are unaudited but, in the opinion of management, reflect all adjustments necessary for a fair statement of the Company’s consolidated financial position, results of operations and cash flows for the periods presented. These adjustments consist of normal, recurring items. The results of operations for any interim period are not necessarily indicative of results for the full year. The interim consolidated financial statements and notes are presented as permitted by the requirements for Quarterly Reports on Form 10-Q. This Quarterly Report on Form 10-Q should be read in conjunction with the Company’s consolidated financial statements and notes included in its Annual Report on Form 10-K. Effective in the first quarter of 2021, 3M made the following changes. Information provided herein reflects the impact of these changes for all periods presented. •Change in accounting principle for net periodic pension and postretirement plan cost. See below for additional information. •Change in measure of segment operating performance used by 3M’s chief operating decision maker—impacting 3M’s disclosed measure of segment profit/loss (business segment operating income). See additional information in Note 16. •Change in alignment of certain products within 3M’s Consumer business segment—creating the Consumer Health and Safety Division. See additional information in Note 16. Change in Accounting Principle for Determining Net Periodic Pension and Postretirement Plan Cost In the first quarter of 2021, 3M changed the method it uses to calculate the market-related value of fixed income securities included in its pension and other postretirement plan assets. The market-related value is used to determine the expected return on plan assets and the amortization of net unamortized actuarial gains or losses expense components of net periodic benefit cost. The Company previously used the calculated value approach for all plan assets, deferring over three years the impact on these amounts of asset gains or losses that differed from expected returns. 3M changed to the fair value approach for calculating market-related value for the fixed income class of plan assets, which does not involve deferring the impact of excess plan asset gains or losses in the determination of these two components of net periodic benefit cost. 3M considers the use of the fair value approach preferable to the calculated value approach as it results in a more current reflection of impacts of changes in value of these plan assets in the determination of net periodic benefit cost. Additionally, given the plans’ liability-driven investment strategy whereby the changes in value of the fixed income plan assets should offset changes in the value of the plans’ liabilities, this approach more closely aligns the expected return on plan assets expense component with the value reflected in the plans’ funded status. This change was applied retrospectively to all periods presented within 3M’s financial statements. The change did not impact consolidated operating income or net cash provided by operating activities but did impact the previously reported portion of pension and postretirement net periodic benefit cost (benefit) that was included within non-operating other expense (income) along with related consolidated income items such as net income and earnings per share. Other impacts included related changes to previously reported consolidated other comprehensive income, retained earnings, accumulated other comprehensive income (loss), and associated line items within the determination of net cash provided by operating activities. For classes of plan assets other than fixed income investments, the Company continues to use the calculated value approach to determine their market-related value. The adoption of this change impacted previously reported amounts included herein as indicated in the tables below.
Consolidated Statement of Income |  |  |  |  |  |  |  |
|  | Three months ended September 30, 2020 |  | Nine months ended September 30, 2020
(Millions, except per share amounts) |  | Under Prior Method |  | As Adjusted |  | Under Prior Method |  | As Adjusted
Other expense (income), net |  | $ | 104 |  | $ | 83 |  | $ | 311 |  | $ | 248
Income before income taxes |  | 1,805 |  | 1,826 |  | 5,001 |  | 5,064
Provision for income taxes |  | 387 |  | 391 |  | 1,002 |  | 1,016
Income of consolidated group |  | 1,418 |  | 1,435 |  | 3,999 |  | 4,048
Net income including noncontrolling interest |  | 1,417 |  | 1,434 |  | 3,998 |  | 4,047
Net income attributable to 3M |  | 1,413 |  | 1,430 |  | 3,995 |  | 4,044
Earnings per share attributable to 3M common shareholders — basic |  | $ | 2.45 |  | $ | 2.47 |  | $ | 6.92 |  | $ | 7.01
Earnings per share attributable to 3M common shareholders — diluted |  | $ | 2.43 |  | $ | 2.45 |  | $ | 6.87 |  | $ | 6.95
Consolidated Statement of Comprehensive Income |  |  |  |  |  |  |  |
|  | Three months ended September 30, 2020 |  | Nine months ended September 30, 2020
(Millions) |  | Under Prior Method |  | As Adjusted |  | Under Prior Method |  | As Adjusted
Net income including noncontrolling interest |  | $ | 1,417 |  | $ | 1,434 |  | $ | 3,998 |  | $ | 4,047
Other comprehensive income (loss), net of tax: |  |  |  |  |  |  |  |
Defined benefit pension and postretirement plans adjustment |  | 127 |  | 116 |  | 304 |  | 271
Total other comprehensive income (loss), net of tax |  | 327 |  | 316 |  | 177 |  |  | 144 |
Comprehensive income (loss) including noncontrolling interest |  | 1,744 |  | 1,750 |  | 4,175 |  | 4,191
Comprehensive income (loss) attributable to 3M |  | 1,739 |  | 1,745 |  | 4,174 |  | 4,190
Consolidated Balance Sheet |  |  |  |
|  | As of December 31, 2020
(Millions) |  | Under Prior Method |  | As Adjusted
Retained earnings |  | $ | 43,761 |  | $ | 43,821
Accumulated other comprehensive income (loss) |  | (7,661) |  |  | (7,721) |
Consolidated Statement of Cash Flows |  |  |  |
|  | Nine months ended September 30, 2020
(Millions) |  | Under Prior Method |  | As Adjusted
Net income including noncontrolling interest |  | $ | 3,998 |  | $ | 4,047
Company pension and postretirement expense |  | 295 |  | 232
Other — net |  | (10) |  |  | 4 |
The cumulative adjustment as of January 1, 2020, the beginning of the earliest period presented in the consolidated financial statements included herein, was a $5 million reduction to each of retained earnings and accumulated other comprehensive loss. Earnings Per Share The difference in the weighted average 3M shares outstanding for calculating basic and diluted earnings per share attributable to 3M common shareholders is a result of the dilution associated with the Company’s stock-based compensation plans. Certain options outstanding under these stock-based compensation plans were not included in the computation of diluted earnings per share attributable to 3M common shareholders because they would have had an anti-dilutive effect of 7.9 million average options for the three months ended September 30, 2021; 7.7 million average options for the nine months ended September 30, 2021; 18.8 million average options for the three months ended September 30, 2020; 19.6 million average options for the nine months ended September 30, 2020). The computations for basic and diluted earnings per share follow: Earnings Per Share Computations
|  | Three months ended September 30, |  | Nine months ended September 30,
(Amounts in millions, except per share amounts) |  | 2021 |  | 2020 |  | 2021 |  | 2020
Numerator: |  |  |  |  |  |  |  |
Net income attributable to 3M |  | $ | 1,434 |  |  | $ | 1,430 |  |  | $ | 4,582 |  |  | $ | 4,044 |
Denominator: |  |  |  |  |  |  |  |
Denominator for weighted average 3M common shares outstanding – basic |  | 579.6 |  |  | 577.8 |  |  | 580.3 |  |  | 577.2 |
Dilution associated with the Company’s stock-based compensation plans |  | 6.7 |  |  | 4.6 |  |  | 6.8 |  |  | 4.4 |
Denominator for weighted average 3M common shares outstanding – diluted |  | 586.3 |  |  | 582.4 |  |  | 587.1 |  |  | 581.6 |
Earnings per share attributable to 3M common shareholders – basic |  | $ | 2.47 |  |  | $ | 2.47 |  |  | $ | 7.90 |  |  | $ | 7.01 |
Earnings per share attributable to 3M common shareholders – diluted |  | $ | 2.45 |  |  | $ | 2.45 |  |  | $ | 7.81 |  |  | $ | 6.95 |
New Accounting Pronouncements Refer to Note 1 in 3M’s 2020 Annual Report on Form 10-K for a more detailed discussion of the standards in the tables that follow, except for those pronouncements issued subsequent to the most recent Form 10-K filing date for which separate, more detailed discussion is provided below as applicable.
Standards Adopted During the Current Fiscal Year
Standard | Relevant Description | Effective Date for 3M | Impact and Other Matters
ASU No. 2019-12, Simplifying the Accounting for Income Taxes (Topic 740) | Eliminates certain existing exceptions related to the general approach in ASC 740 relating to franchise taxes, reducing complexity in the interim-period accounting for year-to-date loss limitations and changes in tax laws, and clarifying the accounting for transactions outside of business combination that result in a step-up in the tax basis of goodwill. | January 1, 2021 | Adoption of this ASU did not have a material impact on 3M’s consolidated results of operations and financial condition.
ASU No. 2020-01, Clarifying the Interactions between Topic 321, Investments—Equity Securities, Topic 323, Investments—Equity Method and Joint Ventures, and Topic 815, Derivatives and Hedging | Clarifies when accounting for certain equity securities, a Company should consider observable transactions before applying or upon discontinuing the equity method of accounting for the purposes of applying the measurement alternative. Indicates when determining the accounting for certain derivatives, a Company should not consider if the underlying securities would be accounted for under the equity method or fair value option. | January 1, 2021 | Adoption of this ASU did not have a material impact on 3M’s consolidated results of operations and financial condition.
ASU No. 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting and ASU No. 2021-01, Reference Rate Reform (Topic 848): Scope | Provides temporary optional expedients and exceptions to existing guidance on contract modifications and hedge accounting to facilitate the market transition from existing reference rates, such as LIBOR which is being phased out beginning at the end of 2021, to alternate reference rates, such as SOFR. | Effective upon ASU issuances in 2020 & 2021 | With the beginning of the phase out of LIBOR at the end of 2021, 3M continues to evaluate commercial contracts that may utilize LIBOR and will continue to monitor developments during the LIBOR transition period.

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- Definition The entire disclosure for all significant accounting policies of the reporting entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123372394&loc=d3e18726-107790 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -URI http://asc.fasb.org/topic&trid=2122369 + Details
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