Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Accounting Policies [Abstract]

Estimated Useful Life of Assets

Depreciation is calculated using the straight-line method over the shorter of the estimated useful life of the asset or the related lease as follows:

Land improvements	12 years
Buildings	30 to 40 years
Leasehold improvements	5 to 15 years
Riverboats and barges	30 years
Furniture, fixtures, and equipment	2 1/2 to 20 years

Estimated Cost of Providing Promotional Allowances

The estimated cost of providing such promotional allowances is included in casino expenses as follows:

	Year Ended December 31,
(In millions)	2012		2011		2010
Total Food and Beverage Expense	$	477.1	$	469.4	$	475.6
Room Expense	186.7		188.1		187.6
Property general, admin and other	49.7		59.0		59.2
	$	713.5	$	716.5	$	722.4