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Schedule II Valuation and Qualifying Accounts - Deferred Tax Asset Valuation Allowance (Detail) - Deferred Tax Asset Valuation Allowance [Member] - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |  |
Balance at Beginning of period |  | $ 327,623 | $ 183,686 | $ 193,052
Charges to Costs, Expenses and Other | [1] | 356,583 | 149,107 | 14,309
Reversal | [2] | (230) | (5) | (21,727)
Adjustments | [3] | (28,318) | (5,165) | (1,948)
Balance at End of period |  | $ 655,658 | $ 327,623 | $ 183,686
[1] | During 2012, 2013 and 2014, the Company recorded valuation allowances on deferred tax assets attributable to net operating losses in certain foreign jurisdictions. In addition, during 2013 and 2014 the Company recorded a valuation allowance of $143.5 million and $339.8 million, respectively, on a portion of its deferred tax assets attributable to federal and state net operating loss carryforwards due to the uncertainty of the ability to utilize those losses in future periods.
[2] | During 2012, 2013 and 2014, the Company realized the tax benefits associated with certain foreign deferred tax assets, primarily related to foreign loss carryforwards, on which a valuation allowance was previously recorded. The associated valuation allowance was reversed in the period in which, based on the weight of available evidence, it is more-likely-than-not that the deferred tax asset will be realized.
[3] | During 2012, 2013 and 2014, the Company adjusted certain valuation allowances as a result of changes in tax rates in certain jurisdictions and as a result of the expiration of carryforward periods for net operating loss carryforwards.

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- Definition Total of the adjustments in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, charged to costs and expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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- Definition Total of recoveries of amounts due the Entity that had previously been written off as uncollectible using allowances (the valuation accounts that are netted against the cost of an asset to value it at its carrying value) and total of reestablishments of reserves (liabilities established to represent expected future costs) that had previously been utilized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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