| Component: (Network and Table) | |
|---|---|
| Network | 00500 - Statement - Consolidated Statement of Cash Flows (http://www.mmm.com/role/StatementConsolidatedStatementOfCashFlows)  | 
| Table | (Implied) | 
| Reporting Entity [Axis] | 0000066740 (http://www.sec.gov/CIK) | 
| Consolidated Statement of Cash Flows | Period [Axis] | ||
|---|---|---|---|
2016-01-01 - 2016-12-31  | 2015-01-01 - 2015-12-31  | 2014-01-01 - 2014-12-31  | |
Consolidated Statement of Cash Flows  | |||
Cash Flows from Operating Activities  | |||
Net income including noncontrolling interest  | 5,058,000,000    | 4,841,000,000    | 4,998,000,000    | 
Adjustments to reconcile net income including noncontrolling interest to net cash provided by operating activities  | |||
Depreciation and amortization  | |||
Company pension and postretirement contributions  | (  | (  | (  | 
Company pension and postretirement expense  | |||
Stock-based compensation expense  | |||
Deferred income taxes  | (  | ||
Excess tax benefits from stock-based compensation  | (  | (  | |
Changes in assets and liabilities  | |||
Accounts receivable  | (  | (  | (  | 
Inventories  | (  | ||
Accounts payable  | |||
Accrued income taxes (current and long-term)  | (  | ||
Other - net  | (  | ||
Net cash provided by operating activities  | |||
Cash Flows from Investing Activities  | |||
Purchases of property, plant and equipment (PP&E)  | (  | (  | (  | 
Proceeds from sale of PP&E and other assets  | |||
Acquisitions, net of cash acquired  | (  | (  | (  | 
Purchases of marketable securities and investments  | (  | (  | (  | 
Proceeds from maturities and sale of marketable securities and investments  | |||
Proceeds from sale of businesses  | |||
Other investing  | (  | ||
Net cash used in investing activities  | (  | (  | (  | 
Cash Flows from Financing Activities  | |||
Change in short-term debt - net  | (  | ||
Repayment of debt (maturities greater than 90 days)  | (  | (  | (  | 
Proceeds from debt (maturities greater than 90 days)  | |||
Purchases of treasury stock  | (  | (  | (  | 
Proceeds from issuance of treasury stock pursuant to stock option and benefit plans  | |||
Dividends paid to shareholders  | (  | (  | (  | 
Excess tax benefits from stock-based compensation  | |||
Purchase of noncontrolling interest  | (  | ||
Other - net  | (  | (  | (  | 
Net cash used in financing activities  | (  | (  | (  | 
Effect of exchange rate changes on cash and cash equivalents  | (  | (  | (  | 
Net increase (decrease) in cash and cash equivalents  | (  | (  | |
Cash and cash equivalents at beginning of year  | 1,798,000,000    | ||
Cash and cash equivalents at end of period  | 2,398,000,000    | 1,798,000,000    | 1,897,000,000    |