Consolidated Balance Sheet (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Current assets
Cash and cash equivalents	$ 3,029	$ 2,219
Marketable securities - current	1,989	1,461
Accounts receivable - net	4,409	3,867
Inventories
Finished goods	1,783	1,536
Work in process	1,163	1,061
Raw materials and supplies	896	819
Total inventories	3,842	3,416
Other current assets	1,225	1,277
Total current assets	14,494	12,240
Marketable securities - non-current	1,400	896
Investments	142	155
Property, plant and equipment	22,042	21,166
Less: Accumulated depreciation	(14,103)	(13,500)
Property, plant and equipment - net	7,939	7,666
Goodwill	7,216	7,047
Intangible assets - net	1,847	1,916
Prepaid pension benefits	47	40
Other assets	1,394	1,656
Total assets	34,479	31,616
Current liabilities
Short-term borrowings and current portion of long-term debt	1,506	682
Accounts payable	1,805	1,643
Accrued payroll	684	676
Accrued income taxes	301	355
Other current liabilities	2,299	2,085
Total current liabilities	6,595	5,441
Long-term debt	4,852	4,484
Pension and postretirement benefits	3,114	3,972
Other liabilities	1,777	1,857
Total liabilities	16,338	15,754
Commitments and contingencies (Note 11)
3M Company shareholders' equity:
Common stock par value, $.01 par value, 944,033,056 shares issued	9	9
Additional paid-in capital	3,998	3,767
Retained earnings	30,150	28,348
Treasury stock, at cost: 252,101,778 shares at September 30, 2012; 249,063,015 shares at December 31, 2011	(11,965)	(11,679)
Accumulated other comprehensive income (loss)	(4,548)	(5,025)
Total 3M Company shareholders' equity	17,644	15,420
Noncontrolling interest	497	442
Total equity	18,141	15,862
Total liabilities and equity	$ 34,479	$ 31,616