Quarterly Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2012

Quarterly Data (Unaudited)

Schedule of Quarterly Financial Information

(Millions, except per-share amounts)		First		Second		Third		Fourth		Year
2012		Quarter		Quarter		Quarter		Quarter		2012
Net sales		$	7,486	$	7,534	$	7,497	$	7,387	$	29,904
Cost of sales			3,889		3,870		3,935		3,991		15,685
Net income including noncontrolling interest			1,141		1,186		1,180		1,004		4,511
Net income attributable to 3M			1,125		1,167		1,161		991		4,444
Earnings per share attributable to 3M
	common shareholders - basic		1.61		1.68		1.68		1.43		6.40
Earnings per share attributable to 3M
	common shareholders - diluted		1.59		1.66		1.65		1.41		6.32
(Millions, except per-share amounts)		First		Second		Third		Fourth		Year
2011		Quarter		Quarter		Quarter		Quarter		2011
Net sales		$	7,311	$	7,680	$	7,531	$	7,089	$	29,611
Cost of sales			3,802		4,040		4,027		3,824		15,693
Net income including noncontrolling interest			1,103		1,177		1,103		974		4,357
Net income attributable to 3M			1,081		1,160		1,088		954		4,283
Earnings per share attributable to 3M
	common shareholders - basic		1.52		1.63		1.54		1.36		6.05
Earnings per share attributable to 3M
	common shareholders - diluted		1.49		1.60		1.52		1.35		5.96