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v2.4.1.9

Current and Deferred Income Tax Expense (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Mar. 31, 2015 | Mar. 31, 2014
Deferred Income Tax Assets And Liabilities |  |  |  |
Income before income taxes | $ 129,876 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | $ 89,289 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | $ 156,789 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | $ 122,132 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Current tax expense | 46,642 us-gaap_CurrentIncomeTaxExpenseBenefit | 32,215 us-gaap_CurrentIncomeTaxExpenseBenefit | 57,772 us-gaap_CurrentIncomeTaxExpenseBenefit | 42,438 us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred tax expense | 7,547 us-gaap_DeferredIncomeTaxExpenseBenefit | 4,858 us-gaap_DeferredIncomeTaxExpenseBenefit | 7,776 us-gaap_DeferredIncomeTaxExpenseBenefit | 8,190 us-gaap_DeferredIncomeTaxExpenseBenefit
Total tax expense | $ 54,189 us-gaap_IncomeTaxExpenseBenefit | $ 37,073 us-gaap_IncomeTaxExpenseBenefit | $ 65,548 us-gaap_IncomeTaxExpenseBenefit | $ 50,628 us-gaap_IncomeTaxExpenseBenefit

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