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Convertible Notes (Details 2) (Convertible Senior Notes, 5% Convertible Senior Notes due 2014, USD $) In Millions, unless otherwise specified | 3 Months Ended
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Jun. 30, 2014
Convertible Senior Notes | 5% Convertible Senior Notes due 2014 |
Debt Instrument [Line Items] |
Repayments of Debt | $ 172.5

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- Definition The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations. + References No definition available. + Details
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