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Income Taxes - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Income Taxes [Line Items]                      
Provision for income taxes $ 86 [1] $ 67 [1] $ 49 [1] $ 89 [1] $ 194 [1] $ 83 [1] $ 109 [1] $ 43 [1] $ 428 $ 291 $ 352
Cash taxes paid, net of refunds                 112 33 75
Federal statutory rate                 35.00% 35.00% 35.00%
Tax credit carryforwards for income tax purposes 158               158    
Tax credit carryforwards for income tax purposes, expiration date                 Begin to expire in 2020    
Tax credit carryforwards for income tax purposes, beginning expiration date                 2020    
Accrued interest and penalties, net of federal income tax benefit, related to tax contingencies 25       24       25 24  
Interest and penalties, net of federal income tax benefit                 1 3 4
Tax examination, additional tax expense including interest and penalties 1,500               1,500    
Description of the status of the tax examination                 We are under examination, or may be subject to examination, by the Internal Revenue Service ("IRS") for the calendar year 2005 or thereafter.    
Internal Revenue Service (IRS)
                      
Income Taxes [Line Items]                      
Net operating Loss Carryforwards 89               89    
Operating loss carryforwards, expiration date                 Begin to expire in 2026    
Operating loss carryforwards, beginning expiration date                 2026    
Foreign Country
                      
Income Taxes [Line Items]                      
Net operating Loss Carryforwards 1,100               1,100    
State of Arizona
                      
Income Taxes [Line Items]                      
Net operating Loss Carryforwards 606               606    
Operating loss carryforwards, expiration date                 Begin to expire in 2013    
Operating loss carryforwards, beginning expiration date                 2013    
FRANCE
                      
Income Taxes [Line Items]                      
Tax examination, additional tax expense including interest and penalties $ 250               $ 250    
Description of the status of the tax examination                 Certain of our subsidiaries are under examination or investigation or may be subject to examination or investigation by the French Tax Administration (FTA) for calendar year 2006 or thereafter.    
[1] The sum of quarterly amounts, including per share amounts, may not equal amounts reported for year-to-date periods. This is due to the effects of rounding and changes in the number of weighted-average shares outstanding for each period.