Income Taxes - Schedule of Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Lease liabilities	$ 10.2	$ 7.7
Net operating losses and credits carryforward	8.8	9.3
Deferred compensation plans	6.9	6.7
Deferred income	4.7	5.5
Deferred liabilities	3.8	2.8
Allowance for uncollectible receivables	1.3	1.2
Capital loss	0.0	29.0
Deferred tax assets	35.7	62.2
Valuation allowance	(3.2)	(1.4)
Net deferred tax asset	32.5	60.8
Deferred tax liabilities:
Equity investments in excess of tax basis	128.9	121.6
Intangible assets in excess of tax basis	74.1	65.6
Property and equipment in excess of tax basis	69.7	77.9
Right-of-use assets	9.9	7.4
Other	2.8	2.2
Deferred tax liabilities	285.4	274.7
Net deferred tax liability	$ (252.9)	$ (213.9)