v3.26.1
Marketable Securities - Schedule of Investments in Available For Sale Debt Securities (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost Basis $ 15,515.8 $ 15,617.4
Unrealized Gains 40.9 98.5
Unrealized Losses (28.3) (2.5)
Fair Value 15,528.4 15,713.4
Corporate bonds    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost Basis 10,606.9 10,141.0
Unrealized Gains 35.3 80.9
Unrealized Losses (22.6) (2.4)
Fair Value 10,619.6 10,219.5
U.S. government and government agency obligations    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost Basis 3,667.9 4,352.2
Unrealized Gains 4.7 15.2
Unrealized Losses (5.0) (0.1)
Fair Value 3,667.6 4,367.3
Commercial paper    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost Basis 689.3 540.8
Unrealized Gains 0.0 0.3
Unrealized Losses (0.2) 0.0
Fair Value 689.1 541.1
Certificates of deposit    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost Basis 248.2 265.7
Unrealized Gains 0.0 0.2
Unrealized Losses (0.2) 0.0
Fair Value 248.0 265.9
Asset-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost Basis 219.2 241.4
Unrealized Gains 0.6 1.4
Unrealized Losses (0.1) 0.0
Fair Value 219.7 242.8
Sovereign bonds    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost Basis 84.3 76.3
Unrealized Gains 0.3 0.5
Unrealized Losses (0.2) 0.0
Fair Value $ 84.4 $ 76.8