Income (Loss) Per Share of Common Stock - Schedule of Potentially Dilutive Securities Excluded from Computation (Details) - shares shares in Millions	3 Months Ended		6 Months Ended
	May. 31, 2015	May. 31, 2014	May. 31, 2015	May. 31, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive securities (in shares)	0.0	21.9	0.0	22.6
Employee Stock Option and Stock Purchase Plan [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive securities (in shares)	0.0	0.7	0.0	0.7
Unvested Restricted Shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive securities (in shares)	0.0	1.5	0.0	1.5
4 1/16% Debentures [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive securities (in shares)	0.0	19.7	0.0	20.4