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Identifiable Intangibles (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Identifiable Intangibles [Line Items]
Nonamortizable identifiable intangibles	$ 498,517us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill	$ 504,241us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill
Identifiable intangibles (net of amortization of $103.6 million and $68.3 million at December 31, 2014 and 2013, respectively)	240,227us-gaap_FiniteLivedIntangibleAssetsNet	176,579us-gaap_FiniteLivedIntangibleAssetsNet
Total identifiable intangibles	$ 738,744us-gaap_IntangibleAssetsNetExcludingGoodwill	$ 680,820us-gaap_IntangibleAssetsNetExcludingGoodwill

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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

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- Definition

Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274



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