Commitments and Contingencies Information Regarding Rental Commitments (Details 2) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Mar. 31, 2015
Property Subject to or Available for Operating Lease [Line Items]
Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals	$ 143,108
Percentage of Sublease Rentals due from Counterparty	35.00%
Operating Leases, Future Minimum Payments Due	$ 772,548
Commitments Related to Vacated and Subleased Space [Member]
Property Subject to or Available for Operating Lease [Line Items]
Valuation Allowances and Reserves, Balance	34,003	$ 31,745
Real Estate And Equipment [Member]
Property Subject to or Available for Operating Lease [Line Items]
Operating Leases, Future Minimum Payments Due	699,523
Service, Support And Maintenance Agreements [Member]
Property Subject to or Available for Operating Lease [Line Items]
Operating Leases, Future Minimum Payments Due	73,025
Commitments Related to Vacated Space that Remains Vacant [Member]
Property Subject to or Available for Operating Lease [Line Items]
Valuation Allowances and Reserves, Balance	18,629	20,495
Operating Leases, Future Minimum Payments Due	27,284
Vacated Office Space [Member]
Property Subject to or Available for Operating Lease [Line Items]
Valuation Allowances and Reserves, Balance	52,632	$ 52,240	$ 45,939
Valuation Allowances and Reserves, Period Increase (Decrease)	$ (2,700)