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Accrued Liabilities - Accrued Liabilities (Detail) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Payables And Accruals [Abstract]    
Customer prepayments and billings $ 687 $ 699
Accrued vendor costs 493 444
Compensation 321 511
Warranty 188 194
Insurance 108 108
Taxes (non income) 105 150
Fair value of derivatives 47 18
Interest 35 14
Other 484 433
Total $ 2,468 $ 2,571