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EQUITY (Tables)
 12 Months Ended
Dec. 31, 2021
Equity [Abstract]  
Schedule of Total Outstanding Shares
Total outstanding shares of common stock and treasury stock were as follows:
(in millions) Shares of Common Stock Shares of Treasury Stock
Outstanding
Shares
Balance at December 31, 2018 264.5  (41.5) 223.0 
Shares of treasury stock issued —  3.1  3.1 
Repurchase of common stock at an average cost of $54.18
 —  (4.8) (4.8)
Balance at December 31, 2019 264.5  (43.2) 221.3 
Shares of treasury stock issued —  1.1  1.1 
Repurchase of common stock at an average cost of $38.25
 —  (3.7) (3.7)
Balance at December 31, 2020 264.5  (45.8) 218.7 
Shares of treasury stock issued —  2.2  2.2 
Repurchase of common stock at an average cost of $57.47
 —  (3.5) (3.5)
Balance at December 31, 2021 264.5  (47.1) 217.4