Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions	Feb. 29, 2020	Nov. 30, 2019	Feb. 28, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents at fair value	$ 170.8	$ 155.4	$ 102.3
Long-term debt	3,716.8	3,723.5	4,119.8
Long-term debt, fair value	3,936.7	3,859.0	4,068.8
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, fair value	3,536.6	3,437.5	3,222.2
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, fair value	400.1	421.5	846.6
Fair Value, Measurements, Recurring [Member]
Assets [Abstract]
Cash and cash equivalents		155.4	102.3
Insurance contracts	120.4	121.7	111.5
Bonds and other long-term investments	0.7	2.7	8.1
Assets, Fair Value Disclosure	334.3	307.2	225.2
Liabilities [Abstract]
Total	8.6	3.6	18.0
Fair Value, Measurements, Recurring [Member] | Level 1
Assets [Abstract]
Cash and cash equivalents	170.8	155.4	102.3
Insurance contracts	0.0	0.0	0.0
Bonds and other long-term investments	0.7	2.7	8.1
Interest Rate Derivative Assets, at Fair Value	0.0
Foreign currency derivatives	0.0	0.0	0.0
Assets, Fair Value Disclosure	171.5	158.1	110.4
Liabilities [Abstract]
Foreign currency derivatives	0.0	0.0	0.0
Interest rate derivatives	0.0		0.0
Total	0.0	0.0	0.0
Fair Value, Measurements, Recurring [Member] | Level 2
Assets [Abstract]
Cash and cash equivalents	0.0	0.0	0.0
Insurance contracts	120.4	121.7	111.5
Bonds and other long-term investments	0.0	0.0	0.0
Interest rate contracts, Fair Value		20.9
Interest Rate Derivative Assets, at Fair Value	34.2		0.1
Foreign currency derivatives	5.6	3.3	3.2
Assets, Fair Value Disclosure	162.8	149.1	114.8
Liabilities [Abstract]
Foreign currency derivatives	7.6	3.6	4.8
Interest rate derivatives			4.0
Cross currency contracts	1.0		9.2
Total	8.6	3.6	18.0
Assets [Member] | Fair Value, Measurements, Recurring [Member] | Level 2
Liabilities [Abstract]
Cross currency contracts	2.6	3.2
Interest rate contracts | Other current assets / Other long-term assets
Assets [Abstract]
Interest rate contracts, Fair Value			0.1
Interest rate contracts | Other accrued liabilities
Assets [Abstract]
Interest rate contracts, Fair Value	0.0
Interest rate contracts | Other accrued liabilities | Fair Value, Measurements, Recurring [Member]
Assets [Abstract]
Interest rate contracts, Fair Value		0.0	4.0
Foreign exchange contracts | Other current assets / Other long-term assets | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign Currency Fair Value Hedge Derivative at Fair Value, Net	5.6	3.3	3.2
Foreign exchange contracts | Other accrued liabilities | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign Currency Fair Value Hedge Derivative at Fair Value, Net	7.6	3.6	4.8
Cross currency contracts | Assets [Member] | Fair Value, Measurements, Recurring [Member]
Liabilities [Abstract]
Cross currency contracts	2.6	3.2
Cross currency contracts | Liability [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign Currency Fair Value Hedge Derivative at Fair Value, Net		$ 0.0	9.2
Liabilities [Abstract]
Cross currency contracts	$ 1.0		$ 9.2