Fair Value Measurements-Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions	Feb. 28, 2017	Nov. 30, 2016	Feb. 29, 2016	Nov. 30, 2015	May 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term Debt	$ 1,054.2	$ 1,056.9	$ 1,055.6
Long-term Debt, Fair Value	1,107.4	1,118.3	1,147.3
Liabilities [Abstract]
Contingent consideration related to acquisition	29.3	28.9	28.4	$ 27.1	$ 27.7
Recurring [Member]
Assets [Abstract]
Cash and cash equivalents	125.7	118.4	111.8
Insurance contracts	111.1	106.0	97.7
Bonds and other long-term investments	9.0	10.2	9.2
Interest rate derivatives			4.5
Foreign currency derivatives	3.5	4.9	4.4
Total assets	249.3	239.5	227.6
Liabilities [Abstract]
Foreign currency derivatives	8.5	5.4	1.8
Interest rate derivatives	2.1	1.2
Contingent consideration related to acquisition	29.3	28.9	28.4
Total liabilities	39.9	35.5	30.2
Recurring [Member] | Level 1 [Member]
Assets [Abstract]
Cash and cash equivalents	125.7	118.4	111.8
Insurance contracts	0.0	0.0	0.0
Bonds and other long-term investments	9.0	10.2	9.2
Interest rate derivatives			0.0
Foreign currency derivatives	0.0	0.0	0.0
Total assets	134.7	128.6	121.0
Liabilities [Abstract]
Foreign currency derivatives	0.0	0.0	0.0
Interest rate derivatives	0.0
Total liabilities	0.0	0.0
Recurring [Member] | Level 2 [Member]
Assets [Abstract]
Cash and cash equivalents	0.0	0.0	0.0
Insurance contracts	111.1	106.0	97.7
Bonds and other long-term investments	0.0	0.0	0.0
Interest rate derivatives			4.5
Foreign currency derivatives	3.5	4.9	4.4
Total assets	114.6	110.9	106.6
Liabilities [Abstract]
Foreign currency derivatives	8.5	5.4	1.8
Interest rate derivatives	2.1	1.2
Total liabilities	10.6	6.6	1.8
Recurring [Member] | Level 3 [Member]
Assets [Abstract]
Cash and cash equivalents	0.0	0.0	0.0
Insurance contracts	0.0	0.0	0.0
Bonds and other long-term investments	0.0	0.0	0.0
Interest rate derivatives			0.0
Foreign currency derivatives	0.0	0.0	0.0
Total assets	0.0	0.0	0.0
Liabilities [Abstract]
Foreign currency derivatives	0.0	0.0	0.0
Interest rate derivatives	0.0
Contingent consideration related to acquisition	29.3	28.9	28.4
Total liabilities	$ 29.3	$ 28.9	$ 28.4