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Share Repurchases and Dividends (Tables)
12 Months Ended
Dec. 31, 2021
Stockholders' Equity Note [Abstract]  
Schedule of share repurchase activity Share repurchase activity during the years ended December 31, 2021 and 2020 follows (in millions except per share amounts):
20212020
Number of shares repurchased2.2 1.2 
Amount paid $252.2 $98.8 
Weighted average cost per share$116.09 $85.06