Marketable Securities and Equity Investments - Summary of Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Cash equivalents:
Amortized Cost	$ 5,636.7	$ 7,372.9
Fair Value	5,636.7	7,372.9
Total marketable debt securities
Gross Unrealized Losses	(24.2)
Fair Value	6,558.3	5,642.8
Corporate equity securities
Amortized Cost	72.1	104.4
Gross Unrealized Gains	0.5	30.9
Gross Unrealized Losses	(26.2)	(18.5)
Fair Value	46.4	116.8
Amortized Cost	2,567.8	374.4
Gross Unrealized Gains	0.6	31.1
Gross Unrealized Losses	(50.4)	(18.8)
Fair Value	2,518.0	386.7
Money market funds
Cash equivalents:
Amortized Cost	3,753.4	5,162.6
Fair Value	3,753.4	5,162.6
Time deposits
Cash equivalents:
Amortized Cost	1,550.0	2,000.0
Fair Value	1,550.0	2,000.0
U.S. Treasury securities
Cash equivalents:
Amortized Cost	236.8	0.0
Fair Value	236.8	0.0
Total marketable debt securities
Amortized Cost	414.6	0.0
Gross Unrealized Gains	0.1	0.0
Gross Unrealized Losses	(6.5)	0.0
Fair Value	408.2	0.0
Government-sponsored enterprise securities
Total marketable debt securities
Amortized Cost	422.9	127.0
Gross Unrealized Gains	0.0	0.2
Gross Unrealized Losses	(1.9)	(0.1)
Fair Value	421.0	127.1
Asset-backed securities
Total marketable debt securities
Amortized Cost	239.3	0.0
Gross Unrealized Gains	0.0	0.0
Gross Unrealized Losses	(1.5)	0.0
Fair Value	237.8	0.0
Certificates of deposit
Total marketable debt securities
Amortized Cost	31.7	0.0
Gross Unrealized Gains	0.0	0.0
Gross Unrealized Losses	0.0	0.0
Fair Value	31.7	0.0
Corporate debt securities
Cash equivalents:
Amortized Cost	0.0	5.8
Fair Value	0.0	5.8
Total marketable debt securities
Amortized Cost	1,228.4	87.2
Gross Unrealized Gains	0.0	0.0
Gross Unrealized Losses	(14.2)	(0.2)
Fair Value	1,214.2	87.0
Commercial paper
Cash equivalents:
Amortized Cost	96.5	204.5
Fair Value	96.5	204.5
Commercial paper
Total marketable debt securities
Amortized Cost	158.8	55.8
Gross Unrealized Gains	0.0	0.0
Gross Unrealized Losses	(0.1)	0.0
Fair Value	158.7	55.8
Total marketable debt securities
Total marketable debt securities
Amortized Cost	2,495.7	270.0
Gross Unrealized Gains	0.1	0.2
Gross Unrealized Losses	(24.2)	(0.3)
Fair Value	$ 2,471.6	$ 269.9