Condensed Consolidating Financial Information, (As Restated for fiscal 2014 and 2013) - Schedule of Condensed Consolidating Statements of Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		9 Months Ended		12 Months Ended
	Feb. 28, 2015	Feb. 28, 2014	May. 31, 2015	May. 31, 2014	Aug. 31, 2015	Aug. 31, 2014	Nov. 30, 2015	Nov. 30, 2014	Nov. 30, 2013
Condensed Cash Flow Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	$ (35.6)	$ (25.3)	$ 28.4	$ (22.3)	$ 70.5	$ 34.3	$ 65.1	$ 150.6	$ 77.4
Cash flows from investing activities:
Capital expenditures	(4.3)	(9.3)	(9.4)	(18.5)	(17.9)	(31.9)	(36.8)	(43.4)	(63.2)
Other investing activities							1.0	7.7	(411.7)
Net cash provided by (used in) investing activities	(4.3)	(9.3)	(9.4)	(18.5)	(17.9)	(31.7)	(35.8)	(35.7)	(474.9)
Cash flows from financing activities:
Debt repayments/repurchases	(9.3)	(10.0)	(28.5)	(145.8)	(72.0)	(165.0)	(81.2)	(166.3)	(12.8)
Proceeds from issuance of debt	0.0	0.0		179.0		189.0	0.0	189.0	460.0
Debt issuance costs	0.0	0.0		(4.1)		(4.2)	0.0	(4.2)	(14.9)
Net transfers from (to) parent							0.0	0.0	0.0
Other financing activities							(2.9)	(65.1)	0.7
Net Cash (Used in) Provided by Financing Activities	(10.3)	(18.9)	(31.4)	(36.1)	(75.2)	(45.3)	(84.1)	(46.6)	433.0
Net increase (decrease) in cash and cash equivalents	(50.2)	(53.5)	(12.4)	(76.9)	(22.6)	(42.7)	(54.8)	68.3	35.5
Cash and Cash Equivalents at Beginning of Period	265.9	197.6	265.9	197.6	265.9	197.6	265.9	197.6	162.1
Cash and Cash Equivalents at End of Period	215.7	144.1	253.5	120.7	243.3	154.9	211.1	265.9	197.6
As Reported [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	(35.6)	(25.3)	28.4	(22.3)	70.5	34.1		150.4	77.6
Cash flows from investing activities:
Capital expenditures	(4.3)	(9.3)	(9.4)	(18.5)	(17.9)	(31.9)		(43.4)	(63.2)
Other investing activities								7.7	(411.7)
Net cash provided by (used in) investing activities	(4.3)	(9.3)	(9.4)	(18.5)	(17.9)	(31.7)		(35.7)	(474.9)
Cash flows from financing activities:
Debt repayments/repurchases	(9.3)	(10.0)	(28.5)	(145.8)	(72.0)	(165.0)		(166.3)	(12.8)
Proceeds from issuance of debt	0.0	0.0		179.0		189.0		189.0	460.0
Debt issuance costs	0.0	0.0		(4.1)		(4.2)		(4.2)	(14.9)
Net transfers from (to) parent								0.0	0.0
Other financing activities								(64.9)	0.5
Net Cash (Used in) Provided by Financing Activities	(10.3)	(18.9)	(31.4)	(36.1)	(75.2)	(45.1)		(46.4)	432.8
Net increase (decrease) in cash and cash equivalents	(50.2)	(53.5)	(12.4)	(76.9)	(22.6)	(42.7)		68.3	35.5
Cash and Cash Equivalents at Beginning of Period	265.9	197.6	265.9	197.6	265.9	197.6	265.9	197.6	162.1
Cash and Cash Equivalents at End of Period	215.7	144.1	253.5	120.7	243.3	154.9		265.9	197.6
Eliminations [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash (used in) provided by operating activities							(5.1)	(5.7)	10.3
Cash flows from investing activities:
Capital expenditures							0.0	0.0	0.0
Other investing activities							0.0	0.0	0.0
Net cash provided by (used in) investing activities							0.0	0.0	0.0
Cash flows from financing activities:
Debt repayments/repurchases							0.0	0.0	0.0
Proceeds from issuance of debt								0.0	0.0
Debt issuance costs								0.0	0.0
Net transfers from (to) parent							0.0	0.0	0.0
Other financing activities							0.0	0.0	0.0
Net Cash (Used in) Provided by Financing Activities							0.0	0.0	0.0
Net increase (decrease) in cash and cash equivalents							(5.1)	(5.7)	10.3
Cash and Cash Equivalents at Beginning of Period	(5.7)	0.0	(5.7)	0.0	(5.7)	0.0	(5.7)	0.0	(10.3)
Cash and Cash Equivalents at End of Period							(10.8)	(5.7)	0.0
Eliminations [Member] | As Reported [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash (used in) provided by operating activities								(5.7)	10.3
Cash flows from investing activities:
Capital expenditures								0.0	0.0
Other investing activities								0.0	0.0
Net cash provided by (used in) investing activities								0.0	0.0
Cash flows from financing activities:
Debt repayments/repurchases								0.0	0.0
Proceeds from issuance of debt								0.0	0.0
Debt issuance costs								0.0	0.0
Net transfers from (to) parent								0.0	0.0
Other financing activities								0.0	0.0
Net Cash (Used in) Provided by Financing Activities								0.0	0.0
Net increase (decrease) in cash and cash equivalents								(5.7)	10.3
Cash and Cash Equivalents at Beginning of Period	(5.7)	0.0	(5.7)	0.0	(5.7)	0.0	(5.7)	0.0	(10.3)
Cash and Cash Equivalents at End of Period								(5.7)	0.0
Parent [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash (used in) provided by operating activities							(66.3)	(35.2)	(40.4)
Cash flows from investing activities:
Capital expenditures							0.0	(0.1)	0.0
Other investing activities							0.0	0.2	0.0
Net cash provided by (used in) investing activities							0.0	0.1	0.0
Cash flows from financing activities:
Debt repayments/repurchases							(81.0)	(166.1)	(12.6)
Proceeds from issuance of debt								189.0	460.0
Debt issuance costs								(4.2)	(14.9)
Net transfers from (to) parent							100.5	160.4	(372.5)
Other financing activities							(2.9)	(65.1)	0.7
Net Cash (Used in) Provided by Financing Activities							16.6	114.0	60.7
Net increase (decrease) in cash and cash equivalents							(49.7)	78.9	20.3
Cash and Cash Equivalents at Beginning of Period	271.6	192.7	271.6	192.7	271.6	192.7	271.6	192.7	172.4
Cash and Cash Equivalents at End of Period							221.9	271.6	192.7
Parent [Member] | As Reported [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash (used in) provided by operating activities								(35.4)	(40.2)
Cash flows from investing activities:
Capital expenditures								(0.1)	0.0
Other investing activities								0.2	0.0
Net cash provided by (used in) investing activities								0.1	0.0
Cash flows from financing activities:
Debt repayments/repurchases								(166.1)	(12.6)
Proceeds from issuance of debt								189.0	460.0
Debt issuance costs								(4.2)	(14.9)
Net transfers from (to) parent								160.4	(372.5)
Other financing activities								(64.9)	0.5
Net Cash (Used in) Provided by Financing Activities								114.2	60.5
Net increase (decrease) in cash and cash equivalents								78.9	20.3
Cash and Cash Equivalents at Beginning of Period	271.6	192.7	271.6	192.7	271.6	192.7	271.6	192.7	172.4
Cash and Cash Equivalents at End of Period								271.6	192.7
Guarantor Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash (used in) provided by operating activities							130.2	194.0	105.1
Cash flows from investing activities:
Capital expenditures							(35.8)	(42.8)	(62.5)
Other investing activities							1.0	7.5	(411.7)
Net cash provided by (used in) investing activities							(34.8)	(35.3)	(474.2)
Cash flows from financing activities:
Debt repayments/repurchases							(0.2)	(0.2)	(0.2)
Proceeds from issuance of debt								0.0	0.0
Debt issuance costs								0.0	0.0
Net transfers from (to) parent							(95.2)	(163.4)	374.2
Other financing activities							0.0	0.0	0.0
Net Cash (Used in) Provided by Financing Activities							(95.4)	(163.6)	374.0
Net increase (decrease) in cash and cash equivalents							0.0	(4.9)	4.9
Cash and Cash Equivalents at Beginning of Period	0.0	4.9	0.0	4.9	0.0	4.9	0.0	4.9	0.0
Cash and Cash Equivalents at End of Period							0.0	0.0	4.9
Guarantor Subsidiaries [Member] | As Reported [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash (used in) provided by operating activities								194.0	105.1
Cash flows from investing activities:
Capital expenditures								(42.8)	(62.5)
Other investing activities								7.5	(411.7)
Net cash provided by (used in) investing activities								(35.3)	(474.2)
Cash flows from financing activities:
Debt repayments/repurchases								(0.2)	(0.2)
Proceeds from issuance of debt								0.0	0.0
Debt issuance costs								0.0	0.0
Net transfers from (to) parent								(163.4)	374.2
Other financing activities								0.0	0.0
Net Cash (Used in) Provided by Financing Activities								(163.6)	374.0
Net increase (decrease) in cash and cash equivalents								(4.9)	4.9
Cash and Cash Equivalents at Beginning of Period	0.0	4.9	0.0	4.9	0.0	4.9	0.0	4.9	0.0
Cash and Cash Equivalents at End of Period								0.0	4.9
Non-guarantor Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash (used in) provided by operating activities							6.3	(2.5)	2.4
Cash flows from investing activities:
Capital expenditures							(1.0)	(0.5)	(0.7)
Other investing activities							0.0	0.0	0.0
Net cash provided by (used in) investing activities							(1.0)	(0.5)	(0.7)
Cash flows from financing activities:
Debt repayments/repurchases							0.0	0.0	0.0
Proceeds from issuance of debt								0.0	0.0
Debt issuance costs								0.0	0.0
Net transfers from (to) parent							(5.3)	3.0	(1.7)
Other financing activities							0.0	0.0	0.0
Net Cash (Used in) Provided by Financing Activities							(5.3)	3.0	(1.7)
Net increase (decrease) in cash and cash equivalents							0.0	0.0	0.0
Cash and Cash Equivalents at Beginning of Period	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0
Cash and Cash Equivalents at End of Period							0.0	0.0	0.0
Non-guarantor Subsidiaries [Member] | As Reported [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash (used in) provided by operating activities								(2.5)	2.4
Cash flows from investing activities:
Capital expenditures								(0.5)	(0.7)
Other investing activities								0.0	0.0
Net cash provided by (used in) investing activities								(0.5)	(0.7)
Cash flows from financing activities:
Debt repayments/repurchases								0.0	0.0
Proceeds from issuance of debt								0.0	0.0
Debt issuance costs								0.0	0.0
Net transfers from (to) parent								3.0	(1.7)
Other financing activities								0.0	0.0
Net Cash (Used in) Provided by Financing Activities								3.0	(1.7)
Net increase (decrease) in cash and cash equivalents								0.0	0.0
Cash and Cash Equivalents at Beginning of Period	$ 0.0	$ 0.0	$ 0.0	$ 0.0	$ 0.0	$ 0.0	$ 0.0	0.0	0.0
Cash and Cash Equivalents at End of Period								$ 0.0	$ 0.0