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Debt - Schedule of Convertible Senior Notes (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Debt Instrument [Line Items]          
Interest Expense $ 9,000,000 $ 9,000,000 $ 27,000,000 $ 26,000,000  
Convertible senior notes          
Debt Instrument [Line Items]          
Aggregate Principal Amount 1,672,000,000   1,672,000,000    
Unamortized Debt Issuance Costs 8,000,000   8,000,000   $ 12,000,000
Fair Value 1,875,000,000   1,875,000,000   1,664,000,000
Contractual Coupon Interest 7,000,000 7,000,000 21,000,000 21,000,000  
Amortization of Debt Issuance Costs 1,000,000 2,000,000 4,000,000 3,000,000  
Interest Expense 8,000,000 9,000,000 25,000,000 24,000,000  
Convertible senior notes | 1.375% convertible senior notes due 2026          
Debt Instrument [Line Items]          
Aggregate Principal Amount $ 499,000,000   $ 499,000,000    
Stated Interest Rate 1.375%   1.375%    
Effective Interest Rate 1.57%   1.57%    
Unamortized Debt Issuance Costs $ 3,000,000   $ 3,000,000   4,000,000
Fair Value 598,000,000   598,000,000   504,000,000
Contractual Coupon Interest 2,000,000 2,000,000 6,000,000 5,000,000  
Amortization of Debt Issuance Costs 0 0 1,000,000 0  
Interest Expense 2,000,000 2,000,000 7,000,000 5,000,000  
Convertible senior notes | 2.75% convertible senior notes due 2025          
Debt Instrument [Line Items]          
Aggregate Principal Amount $ 565,000,000   $ 565,000,000    
Stated Interest Rate 2.75%   2.75%    
Effective Interest Rate 3.20%   3.20%    
Unamortized Debt Issuance Costs $ 4,000,000   $ 4,000,000   5,000,000
Fair Value 571,000,000   571,000,000   531,000,000
Contractual Coupon Interest 4,000,000 4,000,000 12,000,000 12,000,000  
Amortization of Debt Issuance Costs 0 1,000,000 1,000,000 2,000,000  
Interest Expense 4,000,000 5,000,000 13,000,000 14,000,000  
Convertible senior notes | 0.75% convertible senior notes due 2024          
Debt Instrument [Line Items]          
Aggregate Principal Amount $ 608,000,000   $ 608,000,000    
Stated Interest Rate 0.75%   0.75%    
Effective Interest Rate 1.02%   1.02%    
Unamortized Debt Issuance Costs $ 1,000,000   $ 1,000,000   3,000,000
Fair Value 706,000,000   706,000,000   $ 629,000,000
Contractual Coupon Interest 1,000,000 1,000,000 3,000,000 4,000,000  
Amortization of Debt Issuance Costs 1,000,000 1,000,000 2,000,000 1,000,000  
Interest Expense $ 2,000,000 $ 2,000,000 $ 5,000,000 $ 5,000,000