Annual report pursuant to Section 13 and 15(d)

Schedule I—Condensed Financial Information of Registrant - Condensed Statements of Cash Flows (Details)

v2.4.1.9
Schedule I—Condensed Financial Information of Registrant - Condensed Statements of Cash Flows (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Condensed Cash Flow Statements, Captions [Line Items]      
Net Cash Provided by (Used in) Operating Activities $ (124,119)us-gaap_NetCashProvidedByUsedInOperatingActivities $ (52,436)us-gaap_NetCashProvidedByUsedInOperatingActivities $ (107,840)us-gaap_NetCashProvidedByUsedInOperatingActivities
Cash flows from investing activities      
Net cash used in investing activities (211,987)us-gaap_NetCashProvidedByUsedInInvestingActivities (29,423)us-gaap_NetCashProvidedByUsedInInvestingActivities (84,534)us-gaap_NetCashProvidedByUsedInInvestingActivities
Cash flows from financing activities      
Proceeds from issuances of long-term debt 3,584,500us-gaap_ProceedsFromIssuanceOfLongTermDebt 4,504,478us-gaap_ProceedsFromIssuanceOfLongTermDebt 520,000us-gaap_ProceedsFromIssuanceOfLongTermDebt
Proceeds from sale of common stock, net 0us-gaap_ProceedsFromIssuanceOfCommonStock 0us-gaap_ProceedsFromIssuanceOfCommonStock 1,199,869us-gaap_ProceedsFromIssuanceOfCommonStock
Payments related to tax withholdings for share-based compensation (112,324)us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation (136,367)us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation (20,414)us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation
Repayments of long-term debt (177,000)us-gaap_RepaymentsOfLongTermDebt (100,000)us-gaap_RepaymentsOfLongTermDebt (1,326,514)us-gaap_RepaymentsOfLongTermDebt
Excess tax benefit from share-based compensation 3,605us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities 3,385us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities 0us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
Proceeds from exercise of stock options 10,805us-gaap_ProceedsFromStockOptionsExercised 3,698us-gaap_ProceedsFromStockOptionsExercised 836us-gaap_ProceedsFromStockOptionsExercised
Net cash provided by (used in) financing activities 1,122,847us-gaap_NetCashProvidedByUsedInFinancingActivities 840,990us-gaap_NetCashProvidedByUsedInFinancingActivities (65,075)us-gaap_NetCashProvidedByUsedInFinancingActivities
Net increase (decrease) in cash and cash equivalents 786,741us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease 759,131us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease (257,449)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and cash equivalents—beginning of period 960,842us-gaap_CashAndCashEquivalentsAtCarryingValue 201,711us-gaap_CashAndCashEquivalentsAtCarryingValue 459,160us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents—end of period 1,747,583us-gaap_CashAndCashEquivalentsAtCarryingValue 960,842us-gaap_CashAndCashEquivalentsAtCarryingValue 201,711us-gaap_CashAndCashEquivalentsAtCarryingValue
Parent Company [Member]      
Condensed Cash Flow Statements, Captions [Line Items]      
Net Cash Provided by (Used in) Operating Activities (240)us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(5,796)us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(6,699)us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Cash flows from investing activities      
Payments for (Proceeds from) Businesses and Interest in Affiliates (901,329)us-gaap_PaymentsForProceedsFromBusinessesAndInterestInAffiliates
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
139,494us-gaap_PaymentsForProceedsFromBusinessesAndInterestInAffiliates
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(968,962)us-gaap_PaymentsForProceedsFromBusinessesAndInterestInAffiliates
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Net cash used in investing activities (901,329)us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
139,494us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(968,962)us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Cash flows from financing activities      
Proceeds from issuances of long-term debt 1,000,000us-gaap_ProceedsFromIssuanceOfLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_ProceedsFromIssuanceOfLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_ProceedsFromIssuanceOfLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Proceeds from sale of common stock, net 0us-gaap_ProceedsFromIssuanceOfCommonStock
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
3,628us-gaap_ProceedsFromIssuanceOfCommonStock
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
1,200,705us-gaap_ProceedsFromIssuanceOfCommonStock
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Payments related to tax withholdings for share-based compensation (112,324)us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(140,711)us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(20,414)us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Repayments of long-term debt 0us-gaap_RepaymentsOfLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_RepaymentsOfLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(204,630)us-gaap_RepaymentsOfLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Excess tax benefit from share-based compensation 3,605us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
3,385us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Proceeds from exercise of stock options 10,806us-gaap_ProceedsFromStockOptionsExercised
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_ProceedsFromStockOptionsExercised
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_ProceedsFromStockOptionsExercised
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Other (518)us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Net cash provided by (used in) financing activities 901,569us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(133,698)us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
975,661us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Net increase (decrease) in cash and cash equivalents 0us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Cash and cash equivalents—beginning of period 0us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Cash and cash equivalents—end of period $ 0us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
$ 0us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
$ 0us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember