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Software and Other Intangible Assets - Additional Information (Detail) (USD $) | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items] |  |  |
Software, net | $ 191,468,000 | $ 129,314,000 |
Software, accumulated amortization | 95,300,000 | 69,400,000 |
Other intangible assets amortization expense | 18,500,000 | 12,100,000 | 6,400,000
Minimum |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Estimated useful life | 3 years |  |
Maximum |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Estimated useful life | 20 years |  |
Software Marketed for External Sale |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Software, net | 94,000,000 | 100,400,000 |
Software, amortization expense | 13,600,000 | 13,800,000 | 6,300,000
Software Marketed for External Sale | Minimum |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Estimated useful life | 3 years |  |
Software Marketed for External Sale | Maximum |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Estimated useful life | 10 years |  |
Software Acquired or Developed for Internal Use |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Software, net | 97,500,000 | 28,900,000 |
Software, amortization expense | $ 19,100,000 | $ 11,600,000 | $ 8,100,000
Software Acquired or Developed for Internal Use | Minimum |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Estimated useful life | 3 years |  |
Software Acquired or Developed for Internal Use | Maximum |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Estimated useful life | 10 years |  |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition For each balance sheet presented, the amount of accumulated amortization for capitalized computer software costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition For each income statement presented, the amount charged to expense for amortization of capitalized computer software costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128487-111756 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756 + Details
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- Definition The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128487-111756 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756 + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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