Consolidated Balance Sheets (Parenthetical) - $ / shares	Nov. 30, 2020	Feb. 29, 2020
Class A
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	322,000,000	322,000,000
Common stock, issued (in shares)	187,196,051	186,090,745
Treasury stock, at cost (in shares)	17,190,040	18,256,826
Class B
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	30,000,000	30,000,000
Common stock, issued (in shares)	28,277,517	28,300,206
Treasury stock, at cost (in shares)	5,005,800	5,005,800