Loss Per Share of Common Stock - Schedule of Potentially Dilutive Securities Excluded from Computation (Detail) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	May 31, 2014	May 31, 2013	May 31, 2014	May 31, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive securities	21.9	24.0	22.6	24.1
Employee Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive securities	0.7	0.7	0.7	0.7
Unvested Restricted Shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive securities	1.5	1.1	1.5	1.2
Convertible Subordinated Debentures, Bearing Interest at 4.0625% Maturing in December 2039 [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive securities	19.7	22.2	20.4	22.2