Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net income	$ 381.4	$ 144.4
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	51.2	52.0
Distributions from unconsolidated affiliates	77.9	47.5
Equity in income of unconsolidated affiliates	(73.0)	(61.3)
Stock-based compensation	14.4	12.6
Deferred income taxes	20.4	7.4
Asset impairments	4.9	11.2
Amortization of operating lease assets	2.7	2.7
Gain on sale of assets	(274.6)	0.0
Other	2.9	3.1
Changes in operating assets and liabilities:
Income taxes	154.0	39.5
Deferred revenue	(37.9)	(12.6)
Other assets and liabilities	56.5	87.8
Net cash provided by operating activities	380.8	334.3
Cash flows from investing activities:
Capital maintenance expenditures	(23.0)	(13.7)
Capital project expenditures	(144.1)	(15.9)
Proceeds from Calder land sale	279.0	0.0
Other	(7.3)	(0.9)
Net cash provided by (used in) investing activities	104.6	(30.5)
Cash flows from financing activities:
Proceeds from borrowings under long-term debt obligations	1,200.0	780.8
Repayments of borrowings under long-term debt obligations	(3.5)	(427.4)
Payment of dividends	(25.7)	(24.8)
Repurchase of common stock	(84.5)	(193.9)
Taxes paid related to net share settlement of stock awards	(13.2)	(12.6)
Debt issuance costs	(11.4)	(6.8)
Change in bank overdraft	(3.0)	(6.1)
Other	(0.2)	1.4
Net cash provided by financing activities	1,058.5	110.6
Cash flows from discontinued operations:
Operating activities of discontinued operations	0.0	(124.0)
Net increase in cash, cash equivalents and restricted cash	1,543.9	290.4
Cash, cash equivalents and restricted cash, beginning of period	355.6	121.0
Cash, cash equivalents and restricted cash, end of period	1,899.5	411.4
Supplemental disclosures of cash flow information:
Cash paid for interest	42.4	35.9
Cash paid for income taxes	15.9	10.4
Cash received from income tax refunds	33.1	0.0
Schedule of non-cash operating, investing and financing activities:
Property and equipment additions included in accounts payable and accrued expenses	32.5	5.0
Debt issuance costs included in accrued expense and other current liabilities	1.8	0.0
Right-of-use assets obtained in exchange for lease obligations in operating leases	0.9	9.2
Repurchase of common stock included in accrued expense and other current liabilities	$ 2.0	$ 0.0