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Consolidated Statements of Comprehensive Earnings (unaudited) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016
Statement Of Income And Comprehensive Income [Abstract] |  |  |  |
Net Earnings | $ 101,380 | $ 56,387 | $ 219,624 | $ 161,968
Change in Funded Status of Defined Benefit Plans: |  |  |  |
Amortization of Net Actuarial Loss | 314 | 500 | 942 | 1,500
Tax Expense | (117) | (188) | (351) | (564)
Comprehensive Earnings | $ 101,577 | $ 56,699 | $ 220,215 | $ 162,904

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- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e557-108580 + Details
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