Other Commitments And Contingencies (Details) $ / shares in Units, shares in Millions				12 Months Ended
	Nov. 02, 2016 USD ($) properties $ / shares shares	Jun. 30, 2014 claim	Oct. 20, 2011 USD ($) claim	Dec. 31, 2016 USD ($) mortgagenotes properties loans developmentproject	Jun. 30, 2016 USD ($)	Feb. 18, 2016 properties	Dec. 31, 2015 USD ($)
Commitment to fund project development				$ 313,700,000
Revenue bond issued				22,164,000			$ 0
Property under development				$ 297,110,000			$ 378,920,000
Number Of Mortgage Notes Receivable | mortgagenotes				4
Mortgage notes receivable with commitments	$ 52,000,000			$ 14,200,000
Guarantor Obligations, Maximum Exposure, Undiscounted				$ 24,900,000
Loss Contingency, Damages Sought, Value			$ 800,000,000
Loss Contingency, Claims Dismissed, Number | claim		1
Number of Surety Bonds				6
Surety bonds				$ 24,300,000
Loss Contingency, New Claims Filed, Number | claim			3
Loss Contingency, Claims Settled and Dismissed, Number | claim		2	2
Mortgage Loans on Real Estate, Carrying Amount of Mortgages	$ 244,000,000
Number of properties securing debt | properties	14			11		1
Payments to Acquire Businesses, Gross	$ 700,000,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable	647,000,000
Business Combination, Consideration Transferred, Other	53,000,000
Business Combination, Consideration Transferred, Liabilities Incurred	$ 62,000,000
Mortgage Loans on Real Estate, Interest Rate	8.50%
Threshold Trading Days				10 days
business combination termination fee	$ 60,000,000
Business Acquisition, Transaction Costs	$ 10,000,000			$ 9,000,000
Pre-approve Future Property Improvements, Percentage				65.00%
Theatre Properties Member
Development Project In Process | developmentproject				20
Commitment to fund project development				$ 82,300,000
Education Property [Member]
Development Project In Process | developmentproject				20
Commitment to fund project development				$ 126,100,000
RecreationProperties [Member]
Development Project In Process | developmentproject				7
Commitment to fund project development				$ 105,300,000
Louisiana Theatre Properties [Member]
Development Project In Process | developmentproject				2
Economic development revenue bond term (in years)				30 years
Deferred assets related to guarantee				$ 10,600,000
Deferred liabilities related to guarantee				10,600,000
Loss contingency				0
Concord Resort [Member]
Commitment to fund project development				155,000,000
Revenue bond issued					$ 110,000,000
Reimbursement Revenue				43,400,000
Reimbursement Receivable				$ 44,900,000
Minimum [Member]
Business Acquisition, Share Price | $ / shares	$ 68.25
Common Stock, Capital Shares Reserved for Future Issuance | shares	7.8
Business Acquisition, Percentage of Voting Interests Acquired	11.00%
Minimum [Member] | Louisiana Theatre Properties [Member]
Economic development revenue bond annual fees percentage				2.88%
Maximum [Member]
Business Acquisition, Share Price | $ / shares	$ 82.63
Common Stock, Capital Shares Reserved for Future Issuance | shares	9.5
Business Acquisition, Percentage of Voting Interests Acquired	13.00%
Maximum [Member] | Louisiana Theatre Properties [Member]
Economic development revenue bond annual fees percentage				4.00%
Waterpark Hotel and Adventure Park [Member] | Concord Resort [Member]
Commitment to fund project development				$ 1,700,000
Theatre Properties Member
Number of Properties Under Improvement | properties				2
attractions [Member]
Number of Businesses Acquired | properties	15
family entertainment center [Member]
Number of Businesses Acquired | properties	5
attractions and family entertainment centers [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	$ 456,000,000
Ski Resorts [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	$ 374,000,000
Letter of Credit [Member]
Debt Instrument, Number of Instruments | loans				2
Debt initial balance				$ 5,000,000
Secured Debt [Member]
Debt Instrument, Term				5 years