Income Taxes - Deferred Tax Assets (Details) - USD ($) $ in Millions	Feb. 28, 2021	Feb. 29, 2020
Income Tax Disclosure [Abstract]
Intangible assets	$ 1,852.0	$ 2,045.8
Loss carryforwards	233.1	225.9
Stock-based compensation	30.1	75.6
Lease liabilities	83.1	89.2
Inventory	26.6	32.4
Investments in unconsolidated investees	36.7	106.1
Other accruals	33.7	35.0
Gross deferred tax assets	2,295.3	2,610.0
Valuation allowances	(78.6)	(54.1)
Deferred tax assets, net	2,216.7	2,555.9
Property, plant, and equipment	(200.3)	(175.5)
Provision for unremitted earnings	(23.0)	(27.5)
Right-of-use assets	(70.6)	(80.5)
Total deferred tax liabilities	(293.9)	(283.5)
Deferred tax assets (liabilities), net	$ 1,922.8	$ 2,272.4