Basis of Presentation - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended		3 Months Ended
	Dec. 31, 2012 Assets, Total [Member]	Dec. 31, 2012 Liabilities, Total [Member]	Mar. 31, 2012 Operating Costs [Member]	Mar. 31, 2012 Operating Expense Hotel [Member]	Mar. 31, 2012 Opry and Attractions Operating Expenses [Member]	Mar. 31, 2012 Corporate Operating Expenses [Member]	Mar. 31, 2012 Selling, General and Administrative Expenses [Member]	Mar. 31, 2012 Selling General and Administrative Expenses Hotel Cost [Member]	Mar. 31, 2012 Selling General and Administrative Expenses Opry and Attractions Cost [Member]	Mar. 31, 2012 Selling General and Administrative Expenses Corporate Cost [Member]	Mar. 31, 2012 Real Estate Investment Trust Conversion Costs [Member]
Prior period reclassification adjustment	$ 10.7	$ (10.7)	$ 135.0	$ (124.7)	$ (7.3)	$ (3.0)	$ 49.3	$ (32.8)	$ (3.5)	$ (9.9)	$ (3.1)