Commitments and Contingencies (Summary Of Contractual Commitments) (Details) (USD $) In Thousands, unless otherwise specified	Nov. 30, 2012
Commitments:
Debt principal, Total	$ 635,711	[1]
Debt principal, 2013	35,711	[1]
Debt principal, 2014	0	[1]
Debt principal, 2015	0
Debt principal, 2016	0
Debt principal, 2017	600,000
Debt principal, Thereafter	0
Debt interest, Total	62,033
Debt interest, 2013	14,783
Debt interest, 2014	13,500
Debt interest, 2015	13,500
Debt interest, 2016	13,500
Debt interest, 2017	6,750
Debt interest, Thereafter	0
Operating leases, Total	41,455
Operating leases, 2013	11,753
Operating leases, 2014	9,598
Operating leases, 2015	6,623
Operating leases, 2016	5,420
Operating leases, 2017	3,746
Operating leases, Thereafter	4,315
Total commitments	739,199
Total commitments, 2013	62,247
Total commitments, 2014	23,098
Total commitments, 2015	20,123
Total commitments, 2016	18,920
Total commitments, 2017	610,496
Total commitments, Thereafter	$ 4,315

[1] Operating leases include future minimum rent payments, net of estimated sublease income, for facilities that we have vacated pursuant to our restructuring activities, as discussed in Note 9.