Litigation, Contractual Commitments and Contingent Liabilities - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended		0 Months Ended	3 Months Ended		12 Months Ended
	Jun. 30, 2013	Dec. 31, 2009	Dec. 31, 2008	Aug. 31, 2011 Hilton Matter [Member]	Jun. 30, 2010 Hilton Matter [Member]	Feb. 21, 2012 Hilton Hotels Corporation [Member] Hilton Matter [Member]	Dec. 31, 2010 Hilton Hotels Corporation [Member] Class size and members [Member] Hilton Matter [Member]	Dec. 31, 2012 Minimum [Member] Hilton Matter [Member]	Dec. 31, 2010 Minimum [Member] Hilton Hotels Corporation [Member] Hilton Matter [Member]	Dec. 31, 2012 Maximum [Member] Hilton Matter [Member]	Dec. 31, 2010 Maximum [Member] Hilton Hotels Corporation [Member] Hilton Matter [Member]
Disclosure Litigation, Contractual Commitments and Contingent Liabilities Additional Information [Abstract]
Unrecognized tax refund			$ 32.2
Amount of sales tax assessment		27.4
Sales tax accruals reversed on complementary meals	17.5
Long term debt interest payment current year	1,001.9
Long term debt interest payment year two	2,010.8
Long term debt interest payment year three	1,670.4
Long term debt interest payment year four	1,517.0
Long term debt interest payment year five	1,257.7
Long term debt interest payment thereafter	1,401.4
Court Ordered Compliance Period				30 days
Bond Posted by Third Party						75.8
Loss Contingency, Damages Sought, Value							50.0	80.0	80.0		280.0
Loss Contingency, Range of Possible Loss, Percent								30.00%		33.00%
Loss Contingency, Loss in Period					$ 25.0