Consolidated Balance Sheets (USD $)

In Millions, except Share and Per Share data

Mar. 31, 2008

Dec. 31, 2007

Assets [Abstract]

Assets, Current [Abstract]

Cash and Cash Equivalents, at Carrying Value

$ 2,727

$ 1,896

Marketable Securities, Current

567

579

Accounts Receivable, Net, Current

3,776

3,362

Inventory, Net [Abstract]

Inventory, Finished Goods

1,432

1,349

Inventory, Work in Process

952

880

Inventory, Raw Materials and Supplies

637

623

Inventory, Net, Total

3,021

2,852

Other Assets, Current

1,234

1,149

Assets, Current, Total

11,325

9,838

Marketable Securities, Noncurrent

660

480

Long-term Investments

302

298

Property, Plant and Equipment, Gross

18,961

18,390

Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment

(12,186)

(11,808)

Property, Plant and Equipment, Net, Total

6,775

6,582

Goodwill

4,759

4,589

Intangible Assets, Net (Excluding Goodwill)

793

801

Defined Benefit Plan, Noncurrent Assets for Plan Benefits

1,416

1,378

Other Assets, Noncurrent

739

728

Assets, Total

26,769

24,694

Liabilities and Stockholders' Equity [Abstract]

Liabilities [Abstract]

Liabilities, Current [Abstract]

Short-term Borrowings and Current Portion of Long-term Debt

2,042

901

Accounts Payable

1,557

1,505

Employee-related Liabilities

595

580

Accrued Income Taxes Payable

710

543

Other Liabilities, Current

1,796

1,833

Liabilities, Current, Total

6,700

5,362

Long-term Debt, Noncurrent

4,140

4,019

Other Liabilities, Noncurrent

3,494

3,566

Liabilities, Total

14,334

12,947

Commitments and Contingencies

Stockholders' Equity [Abstract]

Common Stock, Value

9

Common Stock, Par or Stated Value Per Share

0.01

Common Stock, Shares, Issued

944,033,056

Additional Paid in Capital, Common Stock

2,833

2,785

Retained Earnings (Accumulated Deficit)

20,929

20,316

Treasury Stock, Value

(10,900)

(10,520)

Treasury Stock, Shares

239,745,555

234,877,025

Unearned Compensation

(81)

(96)

Accumulated Other Comprehensive Income (Loss), Net of Tax

(355)

(747)

Stockholders' Equity, Total

12,435

11,747

Liabilities and Stockholders' Equity, Total

$ 26,769

$ 24,694

Consolidated Statements of Income (USD $)

In Millions, except Share and Per Share data

3 Months Ended
Mar. 31,

2008

2007

Net Income (Loss) [Abstract]

Income (Loss) before Cumulative Effect of Change in Accounting Principle [Abstract]

Income (Loss) from Continuing Operations before Income Taxes, Minority Interest, and Income (Loss) from Equity Method Investments [Abstract]

Operating Income (Loss) [Abstract]

Sales Revenue, Net

$ 6,463

$ 5,937

Costs and Expenses [Abstract]

Cost of Revenue

3,336

3,022

Selling, General and Administrative Expense

1,275

1,281

Research, Development and Related Expenses

351

319

Disposal Group, Not Discontinued Operation, (Gain) Loss on Disposal

(786)

Costs and Expenses, Total

4,962

3,836

Operating Income (Loss), Total

1,501

2,101

Nonoperating (Income) Expense [Abstract]

Interest and Debt Expense

55

38

Other Nonoperating Income

(30)

(28)

Nonoperating (Income) Expense, Total

25

10

Income (Loss) from Continuing Operations before Income Taxes, Minority Interest, and Income (Loss) from Equity Method Investments, Total

1,476

2,091

Income Tax Expense (Benefit)

470

708

Minority Interest in Net Income (Loss) of Consolidated Entities

18

15

Net Income (Loss), Total

988

1,368

Earnings Per Share [Abstract]

Earnings Per Share, Basic [Abstract]

Weighted Average Number of Shares Outstanding, Basic

706,500,000

729,300,000

Earnings Per Share, Basic, Total

1.40

1.88

Earnings Per Share, Diluted [Abstract]

Weighted Average Number of Diluted Shares Outstanding

717,200,000

741,300,000

Earnings Per Share, Diluted, Total

1.38

1.85

Common Stock, Dividends, Per Share, Cash Paid

0.50

0.48

Consolidated Statements of Cash Flows (USD $)

In Millions

3 Months Ended
Mar. 31,

2008

2007

Statement of Cash Flows [Abstract]

Cash and Cash Equivalents, Period Increase (Decrease) [Abstract]

Net Cash Provided by (Used in) Operating Activities [Abstract]

Net Income (Loss)

$ 988

$ 1,368

Adjustments for Noncash Items Included in Income (Loss) from Continuing Operations [Abstract]

Depreciation and Amortization

268

254

Pension and Other Postretirement Benefit Contributions

(49)

(61)

Pension and Other Postretirement Benefit Expense

28

57

Share-based Compensation

43

33

Disposal Group, Not Discontinued Operation, (Gain) Loss on Disposal

(786)

Deferred Income Tax Expense (Benefit)

3

(222)

Excess Tax Benefit from Share-based Compensation, Operating Activities

(5)

(7)

Increase (Decrease) in Operating Capital [Abstract]

(Increase) Decrease in Receivables

(264)

(319)

(Increase) Decrease in Inventories

(86)

(107)

Increase (Decrease) in Accounts Payable

20

49

Increase (Decrease) in Accrued Income Taxes Payable

70

353

Change in Product and Other Insurance Receivables and Claims

25

75

(Increase) Decrease in Other Operating Capital, Net

(44)

(107)

Net Cash Provided by (Used in) Operating Activities, Total

997

580

Net Cash Provided by (Used in) Investing Activities [Abstract]

Payments to Acquire Property, Plant, and Equipment

(298)

(304)

Proceeds from Sale of Productive Assets

4

Payments to Acquire Businesses, Net of Cash Acquired

(16)

(55)

Payments to Acquire Investments

(622)

(3,285)

Proceeds from Sale of Marketable Securities and Investments

250

2,741

Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities

218

95

Proceeds from Divestiture of Businesses

817

Net Cash Provided by (Used in) Investing Activities, Total

(464)

13

Net Cash Provided by (Used in) Financing Activities [Abstract]

Proceeds from (Repayments of) Short-term Debt

1,211

(448)

Repayments of Other Debt

(89)

(56)

Proceeds from Other Debt

1,565

Payments for Repurchase of Common Stock

(510)

(1,164)

Proceeds from Sale of Treasury Stock

79

98

Payments of Dividends, Common Stock

(353)

(350)

Payments of Dividends, Minority Interest

(12)

(10)

Excess Tax Benefit from Share-based Compensation, Financing Activities

5

7

Proceeds from (Payments for) Other Financing Activities

(16)

(6)

Net Cash Provided by (Used in) Financing Activities, Total

315

(364)

Effect of Exchange Rate on Cash and Cash Equivalents

(17)

21

Cash and Cash Equivalents, Period Increase (Decrease)

831

250

Cash and Cash Equivalents, at Carrying Value, Beginning Balance

1,896

1,447

Cash and Cash Equivalents, at Carrying Value, Ending Balance

$ 2,727

$ 1,697

NonGaap - Document and Entity Information

3 Months Ended
Mar. 31, 2008

Document and Entity Information [Abstract]

Entity Registrant Name

3M Company

Entity Central Index Key

0000066740

Document Type

10-Q

Document Report Type

Transition Report

Document Period End Date

03/31/2008

Amendment Flag

FALSE

Current Fiscal Year End Date

12/31

Entity Well-known Seasoned Issuer

Yes

Entity Voluntary Filers

No

Entity Current Reporting Status

Yes

Entity Filer Category

Large Accelerated Filer

Entity Common Stock, Shares Outstanding

704,287,501