 | us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary | parent-child | http://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencies |
 | us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary | parent-child | http://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencies |
 | us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary | parent-child | http://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencies |
 | us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary | parent-child | http://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencies |
 | us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary | parent-child | http://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencies |
 | us-gaap:UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears | parent-child | http://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencies |
 | us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount | parent-child | http://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencies |
 | us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary | domain-member | http://fasb.org/us-gaap/role/disclosure/CommitmentAndContingenciesUnrecordedUnconditionalPurchaseObligationTable |
 | us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary | domain-member | http://fasb.org/us-gaap/role/disclosure/CommitmentAndContingenciesUnrecordedUnconditionalPurchaseObligationTable |
 | us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary | domain-member | http://fasb.org/us-gaap/role/disclosure/CommitmentAndContingenciesUnrecordedUnconditionalPurchaseObligationTable |
 | us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary | domain-member | http://fasb.org/us-gaap/role/disclosure/CommitmentAndContingenciesUnrecordedUnconditionalPurchaseObligationTable |
 | us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary | domain-member | http://fasb.org/us-gaap/role/disclosure/CommitmentAndContingenciesUnrecordedUnconditionalPurchaseObligationTable |
 | us-gaap:UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears | domain-member | http://fasb.org/us-gaap/role/disclosure/CommitmentAndContingenciesUnrecordedUnconditionalPurchaseObligationTable |
 | us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount | domain-member | http://fasb.org/us-gaap/role/disclosure/CommitmentAndContingenciesUnrecordedUnconditionalPurchaseObligationTable |