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Stock-Based Compensation Plans - Additional Information (Detail) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Description of Holiday Stock Plan     Annual awards of one share of common stock to each full-time associate for each full calendar year of service up to a maximum of 10 shares.  
Number of common stock shares to each full-time associate     10  
Shares authorized to be granted under the shareholder-approved plans 17,300,000   17,300,000  
Shares available for future issuance under the plans 9,300,000   9,300,000  
Stock based compensation $ 3 $ 2 $ 8 $ 7
Unrecognized compensation costs related to non-vested awards $ 23   $ 23  
Expected weighted-average period to recognize the unrecognized compensation costs related to non-vested awards     2 years