v3.26.1
Marketable Securities - Schedule of Investments in Available For Sale Debt Securities (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost Basis $ 15,220.7 $ 15,617.4
Unrealized Gains 21.0 98.5
Unrealized Losses (52.5) (2.5)
Fair Value 15,189.2 15,713.4
Corporate bonds    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost Basis 10,768.4 10,141.0
Unrealized Gains 19.7 80.9
Unrealized Losses (36.2) (2.4)
Fair Value 10,751.9 10,219.5
U.S. government and government agency obligations    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost Basis 3,317.6 4,352.2
Unrealized Gains 1.0 15.2
Unrealized Losses (15.1) (0.1)
Fair Value 3,303.5 4,367.3
Commercial paper    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost Basis 558.6 540.8
Unrealized Gains 0.0 0.3
Unrealized Losses (0.3) 0.0
Fair Value 558.3 541.1
Certificates of deposit    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost Basis 304.4 265.7
Unrealized Gains 0.0 0.2
Unrealized Losses (0.3) 0.0
Fair Value 304.1 265.9
Asset-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost Basis 193.2 241.4
Unrealized Gains 0.2 1.4
Unrealized Losses (0.3) 0.0
Fair Value 193.1 242.8
Sovereign bonds    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost Basis 78.5 76.3
Unrealized Gains 0.1 0.5
Unrealized Losses (0.3) 0.0
Fair Value $ 78.3 $ 76.8