Income Taxes (Details) - USD ($)	3 Months Ended		9 Months Ended
	Aug. 31, 2020	Aug. 31, 2019	Aug. 31, 2020	Aug. 31, 2019	Nov. 30, 2019
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 169,400,000		$ 169,400,000		$ 125,600,000
Unrecognized tax benefits that would impact effective tax rate in future	133,900,000		133,900,000		99,500,000
Accrued interest on unrecognized tax benefits	63,800,000		63,800,000		55,600,000
Accrued penalties on unrecognized tax benefits	0		0		$ 0
Income tax expense	$ 95,870,000	$ 18,250,000	$ 203,855,000	$ 79,789,000
Effective income tax rate			26.40%	26.50%