Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Significant Accounting Policies

Earnings per share

Earnings Per Share Computations
(Amounts in millions, except per share amounts)			2012		2011		2010
Numerator:
	Net income attributable to 3M		$	4,444	$	4,283	$	4,085
Denominator:
	Denominator for weighted average 3M common shares
		outstanding – basic		693.9		708.5		713.7
	Dilution associated with the Company’s stock-based
		compensation plans		9.4		10.5		11.8
	Denominator for weighted average 3M common shares
		outstanding – diluted		703.3		719.0		725.5
Earnings per share attributable to 3M common shareholders – basic			$	6.40	$	6.05	$	5.72
Earnings per share attributable to 3M common shareholders – diluted			$	6.32	$	5.96	$	5.63