|
Intangible Assets - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
| Schedule Of Goodwill And Other Intangible Assets [Line Items] | |||
| Customer loyalty payments in cash | $ 78 | $ 47 | $ 65 |
| Balance of accrued commission and incentives | 253 | 211 | |
| Other current asset reclassified as customers loyalty payment with in other intangible assets | 50 | ||
| Other non-current assets reclassified as customers loyalty payments with in other intangible assets | 68 | ||
|
Customer Relationships [Member]
|
|||
| Schedule Of Goodwill And Other Intangible Assets [Line Items] | |||
| Amortization expense | 80 | 82 | 88 |
|
Customer Loyalty Payments [Member]
|
|||
| Schedule Of Goodwill And Other Intangible Assets [Line Items] | |||
| Balance of accrued commission and incentives | 35 | 15 | |
| Amortization expense | $ 63 | $ 62 | $ 74 |