Indebtedness (Schedule of Long-Term Debt Maturities) (Details) $ in Thousands		Jun. 30, 2015 USD ($)
Maturities of Long-term Debt [Abstract]
Remainder of fiscal 2016	[1]	$ 250,111
March 31, 2017	[1]	250,281
March 31, 2018	[1]	620,095
March 31, 2019	[1]	0
March 31, 2020	[1]	356,315
Thereafter	[1]	550,000
Total maturities of long-term debt	[1]	2,026,802
Senior notes, net [Member]
Maturities of Long-term Debt [Abstract]
Unamortized discounts		$ 1,300

[1] Outstanding borrowings under the Securitization Agreement at June 30, 2015 are reflected as maturing at the agreement’s expiration in December 2017. Outstanding borrowings under the Credit Facility at June 30, 2015 are reflected as maturing at the agreement’s expiration in November 2019. The Company’s senior notes are reflected in the debt maturity schedule at their maturity values rather than their carrying values, which are net of aggregate discounts of $1.3 million at June 30, 2015.