Basis of Presentation and Significant Accounting Policies Lease 842 (Details) - USD ($) $ in Millions	Feb. 29, 2020	Dec. 01, 2019	Nov. 30, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other current assets	$ 125.8		$ 118.2
Operating Lease, Right-of-Use Asset	364.5		0.0
Other accrued expenses	440.9		479.1
Operating Lease, Liability, Current	59.3		0.0
Operating Lease, Liability, Noncurrent	$ 335.9		0.0
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other current assets		$ 0.0	3.4
Operating Lease, Right-of-Use Asset		380.7	0.0
Other accrued expenses		0.0	(9.6)
Operating Lease, Liability, Current		(63.9)	0.0
Operating Lease, Liability, Noncurrent		(350.6)	0.0
Other Liabilities		0.0	$ (27.6)
Accounting Standards Update 2016-02 | Difference Between Lease Guidance In Effect Before And After Topic 842
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other current assets		(3.4)
Operating Lease, Right-of-Use Asset		380.7
Other accrued expenses		9.6
Operating Lease, Liability, Current		(63.9)
Operating Lease, Liability, Noncurrent		(350.6)
Other Liabilities		$ 27.6