The ownership percent of the subsidiary held by the entity as of the balance sheet date.

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Decrease in noncontrolling interes related to purchase of subsidiary shares, including other transfers from noncontrolling interest.

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Decrease in noncontrolling interest balance resulting from transfers of ownership.

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- Definition

Increase in non-controlling interest balance due to transfer of shares from a wholly-owned subsidiary to a majority-owned subsidiary.

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The ownership percent of the subsidiary held by the entity before the transaction.

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Increase in noncontrolling interest balance from issuance of additional shares to noncontrolling interest holders or the sale of all or a portion of the parent's equity interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph c(2)

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The consolidating entity's interest in net assets of the subsidiary, expressed as a percentage.

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The portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 19
-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph d

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph A7
-Appendix A

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 20
-Article 9

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 10, 15

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 87-21

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 28, 29, 30

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The value of the noncash (or part noncash) consideration given (for example, liability, equity) in a transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of a transaction not resulting in cash receipts or cash payments in the period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 32

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The cash outflow associated with the purchase of noncontrolling interest during the period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 17
-Subparagraph b

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Supplemental Equity and Comprehensive Income Information (Detail 3) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended			3 Months Ended		6 Months Ended
	Dec. 31, 2010 USD ($)	Sep. 30, 2010 USD ($)	Jun. 30, 2010 USD ($)	Mar. 31, 2010 USD ($)	Dec. 31, 2009 USD ($)	Sep. 30, 2009 USD ($)	Jun. 30, 2009 USD ($)	Mar. 31, 2009 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2009 USD ($)	Dec. 31, 2008 USD ($)	Mar. 31, 2010 Sumitomo 3M Limited USD ($)	Mar. 31, 2010 Sumitomo 3M Limited JPY (¥)	Dec. 31, 2009 Sumitomo 3M Limited USD ($)
Transactions with Sumitomo 3M
3M's effective ownership before transaction												71.50%	71.50%	75.00%
3M's effective ownership after transaction												75.00%	75.00%	71.50%
Increase in noncontrolling interest														$ 81
Cash paid to acquire additional shares (approximately $63 million in USD)												63	5,800
Note payable issued to Sumitomo Electric Industries (approximately $188 million in USD)												188	17,400
Purchase of subsidiary shares including other transfers from noncontrolling interest				278
Net income attributable to 3M	928	1,106	1,121	930	935	957	783	518	4,085	3,193	3,460
Transfer to noncontrolling interest										(81)
Transfers from noncontrolling interest			24	22					43
Change in 3M Company shareholders' equity from net income attributable to 3M and transfers from (to) noncontrolling interest									$ 4,128	$ 3,112