Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets:
Net operating loss	$ 77.4	$ 106.6
Tax credit carryforwards	223.0	202.4
Intangible assets	738.5	802.8
Stock-based compensation	124.4	94.6
Finance lease liabilities	94.9	103.4
Operating lease assets	79.6	81.1
R&D capitalization	438.3	0.0
Other	69.2	90.3
Gross deferred tax assets	1,845.3	1,481.2
Valuation allowance	(237.8)	(220.4)
Total deferred tax assets	1,607.5	1,260.8
Deferred tax liabilities:
Property and equipment	(139.8)	(118.2)
Acquired intangibles	(130.5)	(87.0)
Operating lease liabilities	(63.1)	(64.8)
Other	(27.2)	(56.3)
Total deferred tax liabilities	(360.6)	(326.3)
Net deferred tax assets	$ 1,246.9	$ 934.5