Commitments and Contingencies Information Regarding Rental Commitments (Details 2) - USD ($) $ in Thousands	Sep. 30, 2015	Mar. 31, 2015
Property Subject to or Available for Operating Lease [Line Items]
Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals	$ 152,110
Percentage of Sublease Rentals due from Counterparty	35.00%
Minimum Rental Commitments in Real Estate and Equipment Lease	$ 758,365
Real Estate And Equipment [Member]
Property Subject to or Available for Operating Lease [Line Items]
Minimum Rental Commitments in Real Estate and Equipment Lease	676,047
Service, Support And Maintenance Agreements [Member]
Property Subject to or Available for Operating Lease [Line Items]
Minimum Rental Commitments in Real Estate and Equipment Lease	82,318
Commitments Related to Vacated and Subleased Space [Member]
Property Subject to or Available for Operating Lease [Line Items]
Valuation Allowances and Reserves, Balance	38,474	$ 43,726
Commitments Related to Vacated Space that Remains Vacant [Member]
Property Subject to or Available for Operating Lease [Line Items]
Minimum Rental Commitments in Real Estate and Equipment Lease	4,912
Valuation Allowances and Reserves, Balance	$ 1,925	$ 2,213

Percentage of minimum sublease rentals due from a counterparty.

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- Definition

Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 10

-Section 55

-Paragraph 40

-Subparagraph (Note 3)

-URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717

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- Definition

Contractually required future rental payments receivable on noncancelable subleasing arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 2

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 09

-Article 12

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