Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities:
Net (loss) income	$ (82.1)	$ 137.2	$ 352.8
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	92.9	96.4	63.6
Equity in income of unconsolidated affiliates	(27.7)	(50.6)	(29.6)
Distributions from unconsolidated affiliates	30.7	38.1	19.8
Stock-based compensation	23.7	23.8	21.1
Deferred income taxes	1.1	31.5	36.5
Impairment of intangible assets	17.5	0.0	0.0
Amortization of operating lease assets	5.0	4.6	0.0
Gain on Ocean Downs/Saratoga transaction	0.0	0.0	(54.9)
Gain on sale of Big Fish Games	0.0	0.0	(219.5)
Other	4.5	2.8	(1.2)
Changes in operating assets and liabilities, net of businesses acquired and dispositions:
Income taxes	(34.3)	2.5	13.8
Deferred revenue	(8.3)	(9.3)	(10.3)
Current liabilities of discontinued operations	124.0	0.0	0.0
Other assets and liabilities	(5.1)	12.6	5.7
Net cash provided by operating activities	141.9	289.6	197.8
Cash flows from investing activities:
Capital maintenance expenditures	(23.0)	(48.3)	(29.6)
Capital project expenditures	(211.2)	(82.9)	(119.8)
Acquisition of businesses, net of cash acquired	0.0	(206.6)	13.1
Investments in and advances to unconsolidated affiliates	0.0	(410.1)	0.0
Acquisition of other intangible assets	0.0	(32.1)	0.0
Proceeds from sale of Big Fish Games	0.0	0.0	970.7
Other	(5.2)	(1.2)	(10.3)
Net cash (used in) provided by investing activities	(239.4)	(781.2)	824.1
Cash flows from financing activities:
Proceeds from borrowings under long-term debt obligations	726.1	1,236.3	135.0
Repayments of borrowings under long-term debt obligations	(580.4)	(640.3)	(381.0)
Payment of dividends	(23.4)	(22.2)	(23.7)
Repurchase of common stock	(28.4)	(95.0)	(531.4)
Cash settlement of stock awards	(12.7)	0.0	0.0
Taxes paid related to net share settlement of stock awards	(18.7)	(11.5)	(15.6)
Repayment of Ocean Downs debt	0.0	0.0	(54.7)
Big Fish Games earnout and deferred payments	0.0	0.0	(58.2)
Debt issuance costs	(2.0)	(8.9)	(0.8)
Change in bank overdraft	13.4	0.0	(4.4)
Other	2.1	2.4	1.5
Net cash provided by (used in) financing activities	76.0	460.8	(933.3)
Net (decrease) increase in cash, cash equivalents and restricted cash	(21.5)	(30.8)	88.6
Effect of exchange rate changes on cash	0.0	0.0	(0.8)
Cash, cash equivalents and restricted cash, beginning of year	142.5	173.3	85.5
Cash, cash equivalents and restricted cash, end of year	121.0	142.5	173.3
Supplemental disclosures of cash flow information:
Interest	79.6	61.7	31.1
Income taxes	1.6	23.5	48.6
Schedule of non-cash investing and financing activities:
Dividends payable	25.8	23.5	22.5
Deferred tax liability assumed from equity investment	0.0	103.2	0.0
Property and equipment additions included in accounts payable and accrued expense and other current liabilities	12.9	12.4	6.6
Repurchase of common stock in payment of income taxes on stock-based compensation included in accrued expense and other current liabilities	0.0	3.9	2.5
Repurchase of common stock included in accrued expense and other current liabilities	0.0	0.5	2.5
Acquisition of Ocean Downs, net of cash acquired	$ 0.0	$ 0.0	$ 115.2