Financial Instruments - Summary Of Cash And Available-For-Sale Securities (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Schedule of Available-for-sale Securities [Line Items]
Cash and Cash Equivalents	$ 1,581.2	$ 1,290.9
Total	5,359.9
Total assets measured at fair value, Amortized Cost	6,941.1	8,640.8
Gross Unrealized Gains	0.0	9.9
Gross Unrealized Losses	(198.5)	(31.2)
Allowance for Credit Loss	(1.1)	0.0
Total	5,160.3
Total assets measured at fair value, Fair Value	6,741.5	8,619.5
Short-term Investments	2,536.7	2,913.1
Long-term Investments	2,623.6	4,415.5
Cash
Schedule of Available-for-sale Securities [Line Items]
Cash and Cash Equivalents	497.2	572.3
Fair Value	497.2	572.3
Level 1:
Schedule of Available-for-sale Securities [Line Items]
Cash and Cash Equivalents	1,084.0	713.6
Total	3,799.2	4,125.7
Gross Unrealized Gains	0.0	6.3
Gross Unrealized Losses	(96.6)	(15.4)
Allowance for Credit Loss	0.0	0.0
Total	3,702.6	4,116.6
Short-term Investments	1,542.4	1,100.3
Long-term Investments	1,076.2	2,302.7
Level 1: | Money market funds
Schedule of Available-for-sale Securities [Line Items]
Cash and Cash Equivalents	1,084.0	696.6
Fair Value	1,084.0	696.6
Short-term Investments	0.0	0.0
Long-term Investments	0.0	0.0
Level 1: | U.S. treasuries
Schedule of Available-for-sale Securities [Line Items]
Cash and Cash Equivalents	0.0	17.0
Total	2,715.2	3,429.1
Gross Unrealized Gains	0.0	6.3
Gross Unrealized Losses	(96.6)	(15.4)
Allowance for Credit Loss	0.0	0.0
Total	2,618.6	3,420.0
Short-term Investments	1,542.4	1,100.3
Long-term Investments	1,076.2	2,302.7
Level 2:
Schedule of Available-for-sale Securities [Line Items]
Cash and Cash Equivalents	0.0	5.0
Total	2,644.7	3,942.8
Gross Unrealized Gains	0.0	3.6
Gross Unrealized Losses	(101.9)	(15.8)
Allowance for Credit Loss	(1.1)	0.0
Total	2,541.7	3,930.6
Short-term Investments	994.3	1,812.8
Long-term Investments	1,547.4	2,112.8
Level 2: | Commercial paper
Schedule of Available-for-sale Securities [Line Items]
Cash and Cash Equivalents	0.0	0.0
Total	20.0	717.7
Gross Unrealized Gains	0.0	0.0
Gross Unrealized Losses	0.0	0.0
Allowance for Credit Loss	0.0	0.0
Total	20.0	717.7
Short-term Investments	20.0	717.7
Long-term Investments	0.0	0.0
Level 2: | Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Cash and Cash Equivalents	0.0	5.0
Total	2,022.0	2,485.6
Gross Unrealized Gains	0.0	2.7
Gross Unrealized Losses	(76.0)	(11.9)
Allowance for Credit Loss	(1.1)	0.0
Total	1,944.9	2,476.4
Short-term Investments	651.8	886.7
Long-term Investments	1,293.1	1,584.7
Level 2: | U.S. government agencies
Schedule of Available-for-sale Securities [Line Items]
Cash and Cash Equivalents	0.0	0.0
Total	447.2	526.1
Gross Unrealized Gains	0.0	0.2
Gross Unrealized Losses	(19.9)	(2.9)
Allowance for Credit Loss	0.0	0.0
Total	427.3	523.4
Short-term Investments	247.8	137.8
Long-term Investments	179.5	385.6
Level 2: | Municipal securities
Schedule of Available-for-sale Securities [Line Items]
Cash and Cash Equivalents	0.0	0.0
Total	155.5	213.4
Gross Unrealized Gains	0.0	0.7
Gross Unrealized Losses	(6.0)	(1.0)
Allowance for Credit Loss	0.0	0.0
Total	149.5	213.1
Short-term Investments	74.7	70.6
Long-term Investments	$ 74.8	$ 142.5