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SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION OCI (Details) (USD $) In Thousands, unless otherwise specified
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12 Months Ended |
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Mar. 31, 2015
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Mar. 31, 2014
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Mar. 31, 2013
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| Condensed Financial Statements, Captions [Line Items] |
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|
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| Net income |
$ 88,707us-gaap_ProfitLoss |
$ 187,779us-gaap_ProfitLoss |
$ 131,675us-gaap_ProfitLoss |
| Currency translation adjustments |
(71,617)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax |
18,729us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax |
(11,982)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax |
| Pension liability adjustment, net of tax provision (benefit) |
(36,978)us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax |
23,367us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax |
(28,462)us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax |
| Total comprehensive income |
(19,888)us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest |
229,875us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest |
91,231us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest |
| Net income attributable to noncontrolling interests |
(4,407)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest |
(1,042)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest |
(1,573)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest |
| Currency translation adjustment attributable to noncontrolling interest |
(5,228)brs_OtherComprehensiveIncomeLossForeignCurrencyTransactionandTranslationAdjustmentNetofTaxPortionAttributabletoNoncontrollingInterestandTemporaryEquity |
1,081brs_OtherComprehensiveIncomeLossForeignCurrencyTransactionandTranslationAdjustmentNetofTaxPortionAttributabletoNoncontrollingInterestandTemporaryEquity |
0brs_OtherComprehensiveIncomeLossForeignCurrencyTransactionandTranslationAdjustmentNetofTaxPortionAttributabletoNoncontrollingInterestandTemporaryEquity |
| Total comprehensive (income) loss attributable to noncontrolling interests |
(9,635)us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest |
39us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest |
(1,573)us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest |
| Total comprehensive income (loss) attributable to Bristow Group |
(29,523)us-gaap_ComprehensiveIncomeNetOfTax |
229,914us-gaap_ComprehensiveIncomeNetOfTax |
89,658us-gaap_ComprehensiveIncomeNetOfTax |
| Parent Company [Member] |
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| Condensed Financial Statements, Captions [Line Items] |
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|
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| Net income |
84,359us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
186,797us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
130,165us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
| Currency translation adjustments |
(25,885)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
8,173us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
(1,186)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
| Pension liability adjustment, net of tax provision (benefit) |
0us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
0us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
0us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
| Total comprehensive income |
58,474us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
194,970us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
128,979us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
| Net income attributable to noncontrolling interests |
(59)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
(60)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
(63)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
| Currency translation adjustment attributable to noncontrolling interest |
0brs_OtherComprehensiveIncomeLossForeignCurrencyTransactionandTranslationAdjustmentNetofTaxPortionAttributabletoNoncontrollingInterestandTemporaryEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
0brs_OtherComprehensiveIncomeLossForeignCurrencyTransactionandTranslationAdjustmentNetofTaxPortionAttributabletoNoncontrollingInterestandTemporaryEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
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| Total comprehensive (income) loss attributable to noncontrolling interests |
(59)us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
(60)us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
(63)us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
| Total comprehensive income (loss) attributable to Bristow Group |
58,415us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
194,910us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
128,916us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
| Guarantor Subsidiaries [Member] |
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|
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| Condensed Financial Statements, Captions [Line Items] |
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|
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| Net income |
88,287us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
71,509us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
86,782us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
| Currency translation adjustments |
0us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
0us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
0us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
| Pension liability adjustment, net of tax provision (benefit) |
0us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
0us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
0us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
| Total comprehensive income |
88,287us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
71,509us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
86,782us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
| Net income attributable to noncontrolling interests |
0us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
0us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
0us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
| Currency translation adjustment attributable to noncontrolling interest |
0brs_OtherComprehensiveIncomeLossForeignCurrencyTransactionandTranslationAdjustmentNetofTaxPortionAttributabletoNoncontrollingInterestandTemporaryEquity / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
0brs_OtherComprehensiveIncomeLossForeignCurrencyTransactionandTranslationAdjustmentNetofTaxPortionAttributabletoNoncontrollingInterestandTemporaryEquity / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
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| Total comprehensive (income) loss attributable to noncontrolling interests |
0us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
0us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
0us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
| Total comprehensive income (loss) attributable to Bristow Group |
88,287us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
71,509us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
86,782us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
| Non-Guarantor Subsidiaries [Member] |
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|
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| Condensed Financial Statements, Captions [Line Items] |
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|
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| Net income |
(39,252)us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
118,639us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
38,314us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
| Currency translation adjustments |
24,852us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
(40,402)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
(6,383)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
| Pension liability adjustment, net of tax provision (benefit) |
(36,978)us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
23,367us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
(28,462)us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
| Total comprehensive income |
(51,378)us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
101,604us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
3,469us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
| Net income attributable to noncontrolling interests |
(4,348)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
(982)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
(1,510)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
| Currency translation adjustment attributable to noncontrolling interest |
(5,228)brs_OtherComprehensiveIncomeLossForeignCurrencyTransactionandTranslationAdjustmentNetofTaxPortionAttributabletoNoncontrollingInterestandTemporaryEquity / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
1,081brs_OtherComprehensiveIncomeLossForeignCurrencyTransactionandTranslationAdjustmentNetofTaxPortionAttributabletoNoncontrollingInterestandTemporaryEquity / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
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| Total comprehensive (income) loss attributable to noncontrolling interests |
(9,576)us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
99us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
(1,510)us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
| Total comprehensive income (loss) attributable to Bristow Group |
(60,954)us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
101,703us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
1,959us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
| Consolidations, Eliminations [Member] |
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| Condensed Financial Statements, Captions [Line Items] |
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| Net income |
(44,687)us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |
(189,166)us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |
(123,586)us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |
| Currency translation adjustments |
(70,584)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |
50,958us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |
(4,413)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |
| Pension liability adjustment, net of tax provision (benefit) |
0us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |
0us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |
0us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |
| Total comprehensive income |
(115,271)us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |
(138,208)us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |
(127,999)us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |
| Net income attributable to noncontrolling interests |
0us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |
0us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |
0us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |
| Currency translation adjustment attributable to noncontrolling interest |
0brs_OtherComprehensiveIncomeLossForeignCurrencyTransactionandTranslationAdjustmentNetofTaxPortionAttributabletoNoncontrollingInterestandTemporaryEquity / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |
0brs_OtherComprehensiveIncomeLossForeignCurrencyTransactionandTranslationAdjustmentNetofTaxPortionAttributabletoNoncontrollingInterestandTemporaryEquity / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |
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| Total comprehensive (income) loss attributable to noncontrolling interests |
0us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |
0us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |
0us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |
| Total comprehensive income (loss) attributable to Bristow Group |
$ (115,271)us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |
$ (138,208)us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |
$ (127,999)us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |