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Earnings Per Share - Convertible Senior Notes and Warrants (Details) - $ / shares
shares in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2022
Jun. 30, 2021
Debt Instrument [Line Items]          
Stock-based awards excluded from diluted EPS calculation (antidilutive) (in shares) 0.9 0.4   0.8 0.5
Treasury stock, shares, acquired     3.7    
Class of warrant or right, exercise price of warrants or rights     $ 180.00    
Convertible Debt Securities          
Debt Instrument [Line Items]          
Stock-based awards excluded from diluted EPS calculation (antidilutive) (in shares) 3.7   3.7 3.7  
Common stock, conversion price (in dollars per share) $ 126.00   $ 126.00