Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Millions	Total	Parent [Member]	Common Stock [Member] Class A Common Stock [Member]	Common Stock [Member] Common Class B [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Noncontrolling Interest [Member]
Stockholders' equity, beginning of period at Feb. 28, 2019	$ 12,837.2		$ 1.9	$ 0.3	$ 1,410.8	$ 14,276.2	$ (353.9)	$ (2,784.3)	$ 286.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(237.1)	$ (245.4)	0.0	0.0	0.0	(245.4)	0.0	0.0	8.3
Other comprehensive income (loss), net of income tax effect	(2.7)		0.0	0.0	0.0	0.0	(1.6)	0.0	(1.1)
Comprehensive income (loss)	(239.8)
Dividends declared	(141.9)		0.0	0.0	0.0	(141.9)	0.0	0.0	0.0
Initial recognition of non-controlling interest	20.2		0.0	0.0	0.0	0.0	0.0	0.0	20.2
Shares issued under equity compensation plans	(3.0)		0.0	0.0	(9.3)	0.0	0.0	6.3	0.0
Stock-based compensation	15.5		0.0	0.0	15.5	0.0	0.0	0.0	0.0
Stockholders' equity, end of period at May. 31, 2019	12,488.2		1.9	0.3	1,417.0	13,888.9	(355.5)	(2,778.0)	313.6
Stockholders' equity, beginning of period at Feb. 29, 2020	12,474.3		1.9	0.3	1,514.6	13,695.3	(266.3)	(2,814.0)	342.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(172.6)	$ (177.9)	0.0	0.0	0.0	(177.9)	0.0	0.0	5.3
Other comprehensive income (loss), net of income tax effect	(792.3)		0.0	0.0	0.0	0.0	(756.1)	0.0	(36.2)
Comprehensive income (loss)	(964.9)
Dividends declared	(143.3)		0.0	0.0	0.0	(143.3)	0.0	0.0	0.0
Shares issued under equity compensation plans	(3.2)		0.0	0.0	(6.0)	0.0	0.0	2.8	0.0
Stock-based compensation	14.7		0.0	0.0	14.7	0.0	0.0	0.0	0.0
Stockholders' equity, end of period at May. 31, 2020	$ 11,377.6		$ 1.9	$ 0.3	$ 1,523.3	$ 13,374.1	$ (1,022.4)	$ (2,811.2)	$ 311.6