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Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Summary Of Accounting Policies [Line Items] |  |  |
Cumulative probability threshold for realization of income tax benefits | 50.00% |  |
Minimum recognizable tax benefit | 50.00% |  |
Sustainability threshold for uncertain tax position | 50.00% |  |
Employees average service period to grant awards | 3 years |  |
Advertising expenses | $ 9 | $ 8 | $ 11
Debt issuance costs, total |  | $ 4 |
Minimum [Member] |  |  |
Summary Of Accounting Policies [Line Items] |  |  |
Equity investments, Ownership percentage | 20.00% |  |
Maximum [Member] |  |  |
Summary Of Accounting Policies [Line Items] |  |  |
Equity investments, Ownership percentage | 50.00% |  |
Trademarks and Licenses [Member] | Minimum [Member] |  |  |
Summary Of Accounting Policies [Line Items] |  |  |
Estimated useful lives of intangible assets | 3 years |  |
Trademarks and Licenses [Member] | Maximum [Member] |  |  |
Summary Of Accounting Policies [Line Items] |  |  |
Estimated useful lives of intangible assets | 7 years |  |
Purchased and Internally Developed Software [Member] | Maximum [Member] |  |  |
Summary Of Accounting Policies [Line Items] |  |  |
Estimated useful lives of intangible assets | 4 years |  |

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- Definition Cumulative probability threshold for realization of income tax benefits. + References No definition available. + Details
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- Definition Minimum recognizable tax benefit. + References No definition available. + Details
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- Definition Summary Of Accounting Policies [Line Items] + References No definition available. + Details
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- Definition Sustainability Threshold for Uncertain Tax Position. + References No definition available. + Details
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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 + Details
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- Definition Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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