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Stockholders' Equity (Tables)
 12 Months Ended
Feb. 28, 2022
Equity [Abstract]  
Number of shares of common stock issued and treasury stock, and associated share activity
The number of shares of common stock issued and treasury stock, and associated share activity, are as follows:
Common StockTreasury Stock
Class AClass BClass 1Class AClass B
Balance at February 28, 2019185,740,178 28,322,419 1,149,624 18,927,966 5,005,800 
Share repurchases— — — 265,593 — 
Conversion of shares350,567 (22,213)(328,354)— — 
Exercise of stock options— — 870,957 (747,527)— 
Employee stock purchases— — — (69,324)— 
Vesting of restricted stock units (1)
— — — (91,311)— 
Vesting of performance share units (1)
— — — (29,015)— 
Cancellation of restricted shares— — — 444 — 
Balance at February 29, 2020186,090,745 28,300,206 1,692,227 18,256,826 5,005,800 
Conversion of shares1,113,535 (29,918)(1,083,617)— — 
Exercise of stock options— — 4,326 (1,020,853)— 
Employee stock purchases— — — (67,801)— 
Vesting of restricted stock units (1)
— — — (80,287)— 
Vesting of performance share units (1)
— — — (17,335)— 
Balance at February 28, 2021187,204,280 28,270,288 612,936 17,070,550 5,005,800 
Common StockTreasury Stock
Class AClass BClass 1Class AClass B
Share repurchases— — — 6,179,015 — 
Conversion of shares59,579 (57,948)(1,631)— — 
Exercise of stock options— — 1,637,374 (287,873)— 
Employee stock purchases— — — (57,738)— 
Vesting of restricted stock units (1)
— — — (71,413)— 
Vesting of performance share units (1)
— — — (7,934)— 
Balance at February 28, 2022187,263,859 28,212,340 2,248,679 22,824,607 5,005,800 
(1)Net of the following shares withheld to satisfy tax withholding requirements:
For the Years Ended
February 28,
2022		February 28,
2021		February 29,
2020
Restricted Stock Units36,21337,93349,900
Performance Share Units4,5659,43317,439
Summary of share repurchase activity
A summary of share repurchase activity is as follows:
Class A Common Shares Repurchased
For the Years Ended
February 28, 2022February 28, 2021February 29, 2020
Dollar
Value		Number of
Shares		Dollar
Value		Number of
Shares		Dollar
Value		Number of
Shares
(in millions, except share data)
2018 Authorization$1,390.5 6,179,015 $— — $50.0 265,593 
2021 Authorization— — — — — — 
$1,390.5 6,179,015 $— — $50.0 265,593 
As of April 21, 2022, total shares repurchased under our board authorizations are as follows:
Class A Common Shares
Repurchase
Authorization		Dollar Value
of Shares
Repurchased		Number of
Shares
Repurchased
(in millions, except share data)
2018 Authorization$3,000.0 $2,936.4 12,802,171
2021 Authorization$2,000.0 $— —