Fair Value Measurements (Assets And Liabilities Measured At Fair Value On Recurring Basis) (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Millions, unless otherwise specified	Nov. 30, 2012	Nov. 30, 2011
Fair Value [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	$ 79.0	$ 53.9
Insurance contracts	72.5	59.1
Bonds and other long-term investments	13.6	12.3
Interest rate derivatives	16.7	18.9
Foreign currency derivatives	0.9	2.7
Total	182.7	146.9
Foreign currency derivatives	1.9	0.4
Interest rate derivatives	0.1
Total	2.0	0.4
Level 1 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	79.0	53.9
Insurance contracts	0	0
Bonds and other long-term investments	13.6	12.3
Interest rate derivatives	0	0
Foreign currency derivatives	0	0
Total	92.6	66.2
Foreign currency derivatives	0	0
Total	0	0
Level 2 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	0	0
Insurance contracts	72.5	59.1
Bonds and other long-term investments	0	0
Interest rate derivatives	16.7	18.9
Foreign currency derivatives	0.9	2.7
Total	90.1	80.7
Foreign currency derivatives	1.9	0.4
Interest rate derivatives	0.1
Total	2.0	0.4
Level 3 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	0	0
Insurance contracts	0	0
Bonds and other long-term investments	0	0
Interest rate derivatives	0	0
Foreign currency derivatives	0	0
Total	0	0
Foreign currency derivatives	0	0
Total	$ 0	$ 0