Consolidated Balance Sheet (USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Current assets
Cash and cash equivalents	$ 2,332	$ 2,219
Marketable securities - current	1,399	1,461
Accounts receivable - net	4,323	3,867
Inventories
Finished goods	1,609	1,536
Work in process	1,112	1,061
Raw materials and supplies	840	819
Total inventories	3,561	3,416
Other current assets	1,238	1,277
Total current assets	12,853	12,240
Marketable securities - non-current	763	896
Investments	160	155
Property, plant and equipment	21,484	21,166
Less: Accumulated depreciation	(13,729)	(13,500)
Property, plant and equipment - net	7,755	7,666
Goodwill	7,090	7,047
Intangible assets - net	1,865	1,916
Prepaid pension benefits	43	40
Other assets	1,486	1,656
Total assets	32,015	31,616
Current liabilities
Short-term borrowings and current portion of long-term debt	664	682
Accounts payable	1,779	1,643
Accrued payroll	473	676
Accrued income taxes	423	355
Other current liabilities	2,069	2,085
Total current liabilities	5,408	5,441
Long-term debt	4,510	4,484
Pension and postretirement benefits	3,686	3,972
Other liabilities	1,792	1,857
Total liabilities	15,396	15,754
Commitments and contingencies (Note 10)
3M Company shareholders' equity:
Common stock par value, $.01 par value, 944,033,056 shares issued	9	9
Additional paid-in capital	3,894	3,767
Retained earnings	28,858	28,348
Treasury stock, at cost: 250,161,008 shares at March 31, 2012; 249,063,015 shares at Dec. 31, 2011	(11,794)	(11,679)
Accumulated other comprehensive income (loss)	(4,785)	(5,025)
Total 3M Company shareholders' equity	16,182	15,420
Noncontrolling interest	437	442
Total equity	16,619	15,862
Total liabilities and equity	$ 32,015	$ 31,616