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Long-Term Employee Benefit Liabilities - Company's Termination and Long Service Arrangements (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Employee Benefit Plans [Line Items]      
Long-term employee benefit liabilities $ 560 $ 419 $ 356
Termination And Long Service Arrangements [Member]
      
Employee Benefit Plans [Line Items]      
Beginning of year 237 220 190
Current service cost 15 14 13
Interest cost 12 10 11
Actuarial losses and changes in actuarial assumptions 41 14 33
Benefits paid (12) (11) (12)
Curtailment (4) 0 0
Divestitures 0 0 (3)
Currency translation 7 (10) (12)
Ending funded status 296 237 220
Current liability 10 8 8
Long-term employee benefit liabilities 286 229 212
Net amount 296 237 220
Unrecognized actuarial losses (73) (45) (41)
Current service cost 15 14 13
Interest cost 12 10 11
Actuarial losses 12 6 5
Net periodic benefit cost $ 39 $ 30 $ 29