Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions	May 31, 2018	Nov. 30, 2017	May 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	$ 4,531.7	$ 4,769.5	$ 1,054.9
Long-term debt, fair value	4,470.9	4,858.5	1,116.3
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, fair value	3,207.0	3,615.2
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, fair value	1,263.9	1,243.3
Recurring
Assets [Abstract]
Cash and cash equivalents	202.6	186.8	130.0
Insurance contracts	120.3	119.5	113.0
Bonds and other long-term investments	4.3	7.5	9.2
Foreign currency derivatives	5.8	12.7	3.2
Total assets	333.0	326.5	255.4
Liabilities [Abstract]
Foreign currency derivatives	5.2	4.7	3.2
Interest rate derivatives	5.8	2.5	2.4
Total liabilities	11.0	7.2	5.6
Recurring | Level 1
Assets [Abstract]
Cash and cash equivalents	202.6	186.8	130.0
Insurance contracts	0.0	0.0	0.0
Bonds and other long-term investments	4.3	7.5	9.2
Foreign currency derivatives	0.0	0.0	0.0
Total assets	206.9	194.3	139.2
Liabilities [Abstract]
Foreign currency derivatives	0.0	0.0	0.0
Interest rate derivatives	0.0
Total liabilities	0.0	0.0	0.0
Recurring | Level 2
Assets [Abstract]
Cash and cash equivalents	0.0	0.0	0.0
Insurance contracts	120.3	119.5	113.0
Bonds and other long-term investments	0.0	0.0	0.0
Foreign currency derivatives	5.8	12.7	3.2
Total assets	126.1	132.2	116.2
Liabilities [Abstract]
Foreign currency derivatives	5.2	4.7	3.2
Interest rate derivatives	5.8	2.5	2.4
Total liabilities	$ 11.0	$ 7.2	$ 5.6