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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
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Dec. 31, 2013
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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| Schedule Of Accounting Policies [Line Items] | ||||
| Advertising expenses, included in selling, general and administrative expenses | $ 17 | $ 15 | $ 16 | |
| Unrecognized tax benefits recognition probability percentage | 50.00% | |||
| Maximum expected period for uncertain tax positions to be unclassified as non-current other liabilities | 1 year | |||
| Bad debt recovery expense | 4 | 4 | 1 | |
| Percentage of the unadjusted fair value of derivative instruments | 15.00% | |||
| Impairment charge related to goodwill and other indefinite-lived intangible assets | 0 | |||
| Company discontinues equity accounting and the investment is reported | 0 | |||
| Parent company indirectly owning equity in Worldwide | 100.00% | 100.00% | ||
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Capitalized Software [Member]
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| Schedule Of Accounting Policies [Line Items] | ||||
| Software amortization cost | $ 65 | $ 89 | $ 81 | |