Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2012

Significant Accounting Policies

Earnings per share

Earnings Per Share Computations
			Three months ended				Nine months ended
			September 30,				September 30,
(Amounts in millions, except per share amounts)			2012		2011		2012		2011
Numerator:
	Net income attributable to 3M		$	1,161	$	1,088	$	3,453	$	3,329
Denominator:
	Denominator for weighted average 3M common shares
		outstanding – basic		693.0		707.7		694.7		710.9
	Dilution associated with the Company’s stock-based
		compensation plans		10.1		7.8		9.2		11.9
	Denominator for weighted average 3M common shares
		outstanding – diluted		703.1		715.5		703.9		722.8
Earnings per share attributable to 3M common
	shareholders – basic		$	1.68	$	1.54	$	4.97	$	4.68
Earnings per share attributable to 3M common
	shareholders – diluted		$	1.65	$	1.52	$	4.91	$	4.61