Marketable Securities - Schedule of Investments in Available For Sale Debt Securities (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Amortized Cost Basis	$ 10,320.1	$ 8,428.7
Unrealized Gains	0.9	10.8
Unrealized Losses	(302.8)	(42.3)
Fair Value	10,018.2	8,397.2
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost Basis	6,975.5	7,518.4
Unrealized Gains	0.0	10.2
Unrealized Losses	(291.1)	(40.9)
Fair Value	6,684.4	7,487.7
U.S. government and government agency obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost Basis	2,945.4	109.0
Unrealized Gains	0.9	0.3
Unrealized Losses	(6.9)	(0.8)
Fair Value	2,939.4	108.5
Sovereign bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost Basis	67.1	64.4
Unrealized Gains	0.0	0.3
Unrealized Losses	(3.0)	(0.3)
Fair Value	64.1	64.4
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized Cost Basis	121.1	439.7
Unrealized Gains	0.0	0.0
Unrealized Losses	0.0	(0.1)
Fair Value	121.1	439.6
Certificates of deposit
Debt Securities, Available-for-sale [Line Items]
Amortized Cost Basis	182.1	255.2
Unrealized Gains	0.0	0.0
Unrealized Losses	(0.1)	(0.1)
Fair Value	182.0	255.1
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost Basis	28.9	42.0
Unrealized Gains	0.0	0.0
Unrealized Losses	(1.7)	(0.1)
Fair Value	$ 27.2	$ 41.9