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Stockholders' Equity - Additional Information (Detail) - USD ($) | 12 Months Ended
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Mar. 31, 2016 | Mar. 31, 2015
Stockholders Equity Note [Line Items] |  |
Shares repurchased, value |  | $ 99,999,000
September 2010 Senior Unsecured Notes |  |
Stockholders Equity Note [Line Items] |  |
Accumulated other comprehensive loss related to hedges, after-tax loss relating to interest rate hedges | $ 1,500,000 | 1,800,000
Accumulated other comprehensive loss related to hedges, pre-tax loss relating to interest rate hedges | 2,400,000 | 2,600,000
May 2014 Authorized Amount |  |
Stockholders Equity Note [Line Items] |  |
Amount authorized to repurchase shares | $ 200,000,000 |
Shares repurchased, value |  | $ 100,000,000
Number of Shares Authorized to be Repurchased | 0 |

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- Definition Amount before tax, after reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580 + Details
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- Definition Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580 + Details
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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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- Definition Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
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