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Income Taxes (Narrative) (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Income Tax Expense Benefit [Line Items] |  |  |
Total current benefit (expense) | $ (24,566) | $ (36,353) | $ 3,668
Income Tax Expense (Benefit), Continuing Operations [Abstract] |  |  |
Reduction to current tax expense | 35,400 |  | 67,300
Valuation Allowance Recorded | 339,800 | 143,500 |
Total deferred benefit | (33,923) | 158,170 | 304,611
Deferred Tax Assets Net Current Classification [Abstract] |  |  |
Current net deferred tax assets included in net deferred tax liabilities | 37,800 | 52,000 |
Net deferred tax liabilities | 1,526,095 | 1,485,853 |
Foreign deferred tax liabilities | 13,600 | 19,800 |
Foreign net operating loss carryforwards | 153,000 |  |
Deferred Tax Assets Operating Loss Carryforwards Components [Abstract] |  |  |
Net operating loss carryforwards (tax effected) | 1,300,000 |  |
Deferred tax assets related to stock-based compensation expense included in net deferred tax liabilities | 28,900 |  |
Foreign income before taxes | 97,200 | 48,300 | 84,000
Income Tax Reconciliation Tax Settlements [Abstract] |  |  |
Settlement of U.S. Federal and state tax examinations | $ 28,900 | $ 20,200 | $ 60,600
Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued [Abstract |  |  |
Effective tax rate | (8.00%) | 17.00% | 43.00%
Interest and penalties accrued related to unrecognized tax benefits | $ 40,800 | $ 49,400 |
Total unrecognized tax benefits and accrued interest and penalties | 147,700 | 178,800 |
Portion of unrecognized tax benefits, interest and penalties recorded in "Other long-term liabilities" | 110,400 | 131,000 |
Noncurrent portion of unrecognized tax benefits netted against deferred tax assets | 35,000 | 36,100 |
Unrecognized tax benefits that would impact effective tax rate | 68,800 | 100,100 |
Portion of unrecognized tax benefits included in "Accrued Expenses" | 2,300 | $ 11,600 |
Federal and State Net Operating Losses [Member] |  |  |
Valuation Allowance [Abstract] |  |  |
Valuation Allowance | 487,100 |  |
Foreign Net Operating Loss Carryforwards [Member] |  |  |
Valuation Allowance [Abstract] |  |  |
Valuation Allowance | 146,400 |  |
Other Foreign Deferred Tax Assets [Member] |  |  |
Valuation Allowance [Abstract] |  |  |
Valuation Allowance | $ 22,100 |  |

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