Fair Value Measurements-Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) (Recurring [Member], USD $) In Millions, unless otherwise specified	Feb. 28, 2014	Nov. 30, 2013	Feb. 28, 2013
Fair Value [Member]
Assets [Abstract]
Cash and cash equivalents	$ 89.4	$ 63.0	$ 68.6
Insurance contracts	92.3	90.1	75.7
Bonds & other long-term investments	15.2	13.3	13.9
Interest rate derivatives	9.7	12.2	15.4
Foreign currency derivatives	2.4	1.1	2.3
Total assets	209.0	179.7	175.9
Liabilities [Abstract]
Foreign currency derivatives	1.9	1.6	1.4
Liabilities, Fair Value Disclosure		1.6
Level 1 [Member]
Assets [Abstract]
Cash and cash equivalents	89.4	63.0	68.6
Insurance contracts	0	0	0
Bonds & other long-term investments	15.2	13.3	13.9
Interest rate derivatives	0	0	0
Foreign currency derivatives	0	0	0
Total assets	104.6	76.3	82.5
Liabilities [Abstract]
Foreign currency derivatives	0	0	0
Level 2 [Member]
Assets [Abstract]
Cash and cash equivalents	0	0	0
Insurance contracts	92.3	90.1	75.7
Bonds & other long-term investments	0	0	0
Interest rate derivatives	9.7	12.2	15.4
Foreign currency derivatives	2.4	1.1	2.3
Total assets	104.4	103.4	93.4
Liabilities [Abstract]
Foreign currency derivatives	1.9	1.6	1.4
Liabilities, Fair Value Disclosure		1.6
Level 3 [Member]
Assets [Abstract]
Cash and cash equivalents	0	0	0
Insurance contracts	0	0	0
Bonds & other long-term investments	0	0	0
Interest rate derivatives	0	0	0
Foreign currency derivatives	0	0	0
Total assets	0	0	0
Liabilities [Abstract]
Foreign currency derivatives	$ 0	$ 0	$ 0