Annual report pursuant to Section 13 and 15(d)

COMPANY-SPONSORED EMPLOYEE BENEFIT PLANS - Projected Benefit Obligation, Accumulated Benefit Obligation, and Fair Value of Plan Assets for Pension Plans With an Accumulated Benefit Obligation in Excess of Plan Assets (Detail)

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COMPANY-SPONSORED EMPLOYEE BENEFIT PLANS - Projected Benefit Obligation, Accumulated Benefit Obligation, and Fair Value of Plan Assets for Pension Plans With an Accumulated Benefit Obligation in Excess of Plan Assets (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2012
U.S. Pension Benefits
Dec. 31, 2011
U.S. Pension Benefits
Dec. 31, 2012
International Pension Benefits
Dec. 31, 2011
International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]          
Document Fiscal Year Focus 2012        
Projected benefit obligation, Projected Benefit Obligation Exceeds the Fair Value of the Plan Assets   $ 31,868 $ 24,386 $ 1,028 $ 814
Accumulated benefit obligation, Projected Benefit Obligation Exceeds the Fair Value of the Plan Assets   29,382 22,574 917 714
Fair value of plan assets, Projected Benefit Obligation Exceeds the Fair Value of the Plan Assets   24,941 22,663 723 594
Projected benefit obligation, Accumulated Benefit Obligation Exceeds the Fair Value of Plan Assets   31,868 7,499 678 499
Accumulated benefit obligation, Accumulated Benefit Obligation Exceeds the Fair Value of Plan Assets   29,382 7,395 606 448
Fair value of plan assets, Accumulated Benefit Obligation Exceeds the Fair Value of Plan Assets   $ 24,941 $ 6,646 $ 388 $ 296