Income Taxes - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Contingency [Line Items]
Adjustments for certain privately-held investments	$ 9.8
Adjustments related to interest on income tax reserves	5.0
Income tax benefits from provision to return adjustments due to changes in tax legislation	(10.9)
Valuation allowance	326.9	$ 310.9
Increase (decrease) in DTA valuation allowance	16.0	10.0
Undistributed earnings of foreign subsidiaries	156.7
Additional income tax expense related to undistributed earnings	31.7
Unrecognized tax benefits	132.8	116.0	$ 113.4	$ 116.0
Unrecognized tax benefits that would impact effective tax rate	127.8
Unrecognized tax benefits, penalties and interest	6.3	(2.5)	2.7
Reductions in unrecognized tax benefits (up to)	0.0	2.5	3.6
Minimum
Income Tax Contingency [Line Items]
Reductions in unrecognized tax benefits (up to)	49.9
Other long-term liabilities
Income Tax Contingency [Line Items]
Interest and penalties accrued related to unrecognized tax benefits	12.0	$ 5.6	$ 8.1
Federal
Income Tax Contingency [Line Items]
Valuation allowance	5.2
Net operating loss carry-forwards	104.3
Tax credit carry-forwards	2.4
State and Local Jurisdiction
Income Tax Contingency [Line Items]
Valuation allowance	312.9
State and Local Jurisdiction | California
Income Tax Contingency [Line Items]
Net operating loss carry-forwards	129.1
State and Local Jurisdiction | Other States
Income Tax Contingency [Line Items]
Net operating loss carry-forwards	138.8
Tax credit carry-forwards	32.8
State and Local Jurisdiction | California Deferred Tax Assets
Income Tax Contingency [Line Items]
Net operating loss carry-forwards	129.1
Tax credit carry-forwards	326.7
Foreign Tax Authority
Income Tax Contingency [Line Items]
Valuation allowance	$ 8.8