Consolidated Statement of Comprehensive Income (Loss) (USD $) In Millions	12 Months Ended
Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008
Consolidated Statement of Comprehensive Income (Loss)
Net income including noncontrolling interest	$ 4,163	$ 3,244	$ 3,520
Other comprehensive income, net of tax:
Cumulative translation adjustment	244	273	(806)
Defined benefit pension and postretirement plans adjustment	(42)	(314)	(2,092)
Debt and equity securities, unrealized gain (loss)	3	10	(11)
Cash flow hedging instruments, unrealized gain (loss)	4	(80)	72
Total other comprehensive income (loss), net of tax	209	(111)	(2,837)
Comprehensive income (loss) including noncontrolling interest	4,372	3,133	683
Comprehensive (income) loss attributable to noncontrolling interest	(115)	(33)	(122)
Total Comprehensive income (loss) attributable to 3M	$ 4,257	$ 3,100	$ 561

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to noncontrolling interests, if any. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the economic entity, including both controlling (parent) and noncontrolling interests. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, including any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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Gross appreciation or the gross loss in value of the total unsold securities at the end of an accounting period, after tax.

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Net changes to accumulated comprehensive income during the period related to benefit plans, after tax.

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Net of tax effect change in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges after taxes. A cash flow hedge is a hedge of the exposure to variability in the cash flows of a recognized asset or liability or a forecasted transaction that is attributable to a particular risk. The change includes an entity's share of an equity investee's increase (decrease) in deferred hedging gains or losses.

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Adjustment that results from the process of translating subsidiary financial statements and foreign equity investments into functional currency of the reporting entity, net of tax.

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This element represents Other Comprehensive Income (Loss), Net of Tax, for the period. Includes deferred gains (losses) on qualifying hedges, unrealized holding gains (losses) on available-for-sale securities, minimum pension liability, and cumulative translation adjustment.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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