Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net income	$ 352.8	$ 140.5	$ 108.1
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	63.6	97.1	108.6
Earnings from equity investments, net	(29.6)	(25.5)	(17.4)
Distributed earnings from equity investments	19.8	18.0	15.6
Stock-based compensation	21.1	27.1	18.9
Deferred income taxes	36.5	(65.0)	35.4
Loss on impairment of assets	0.0	21.7	0.0
Loss on extinguishment of debt	0.0	20.7	0.0
Gain on Ocean Downs/Saratoga transaction	(54.9)	0.0	0.0
Loss (gain) on sale of assets	0.0	0.1	(23.6)
Gain on sale of Big Fish Games	(219.5)	0.0	0.0
Big Fish Games earnout and deferred payments	(4.4)	(2.4)	(21.7)
Game software development amortization	0.4	17.5	17.2
Other	2.8	1.7	2.0
Changes in operating assets and liabilities, net of businesses acquired and dispositions:
Game software development	(0.3)	(22.1)	(22.1)
Income taxes	13.8	(27.4)	(6.6)
Deferred revenue	(10.3)	17.2	17.9
Other assets and liabilities	6.0	(4.1)	(0.9)
Net cash provided by operating activities	197.8	215.1	231.4
Cash flows from investing activities:
Capital maintenance expenditures	(29.6)	(33.3)	(30.9)
Capital project expenditures	(119.8)	(83.6)	(23.8)
Acquisition of businesses, net of cash	13.1	(24.2)	0.0
Proceeds from sale of assets	0.0	(24.0)	(8.0)
Proceeds from sale of Big Fish Games	970.7	0.0	0.0
Proceeds from sale of assets	0.0	0.0	25.6
Receivable from escrow	0.0	13.6	(13.6)
Other	(10.3)	(2.1)	0.0
Net cash provided by (used in) investing activities	824.1	(153.6)	(50.7)
Cash flows from financing activities:
Proceeds from borrowings under long-term debt obligations	135.0	2,050.4	727.1
Repayments of borrowings under long-term debt obligations	(381.0)	(1,835.8)	(588.4)
Payment of dividends	(23.7)	(21.5)	(19.1)
Repurchase of common stock	(547.0)	(190.9)	(39.0)
Common stock issued	1.5	2.1	2.2
Repayment of Ocean Downs debt	(54.7)	0.0	0.0
Big Fish Games earnout and deferred payments	(58.2)	(31.8)	(288.3)
Call premium on 2021 Senior Notes	0.0	(16.1)	0.0
Debt issuance costs	(0.8)	(14.4)	(1.4)
Other	(4.4)	(1.5)	5.0
Net cash used in financing activities	(933.3)	(59.5)	(201.9)
Net increase (decrease) in cash, cash equivalents and restricted cash	88.6	2.0	(21.2)
Effect of exchange rate changes on cash	(0.8)	0.5	0.0
Cash, cash equivalents and restricted cash, beginning of year	85.5	83.0	104.2
Cash, cash equivalents and restricted cash, end of year	173.3	85.5	83.0
Supplemental disclosures of cash flow information:
Interest	31.1	47.5	40.0
Income taxes	48.6	75.9	32.4
Schedule of non-cash investing and financing activities:
Dividends payable	22.7	23.7	21.8
Property and equipment additions included in accounts payable and accrued expense	6.6	9.6	4.2
Repurchase of common stock in payment of income taxes on stock-based compensation included in accrued expense	2.5	1.3	6.4
Repurchase of treasury stock included in accrued expense	2.5	0.0	0.0
Acquisition of Ocean Downs, net of cash acquired	$ 115.2	$ 0.0	$ 0.0