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Consolidated Statements of Stockholders' Equity (Unaudited) (Parenthetical) - shares
shares in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Stockholders' Equity [Roll Forward]        
Exercise of employee stock options (in shares) 0.1 0.1 1.2 0.6