Relationship with Major Customer - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended												12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2014	Dec. 31, 2013		Dec. 28, 2012
Revenue, Major Customer [Line Items]
Revenues	$ 3,559	$ 3,460	$ 3,484	$ 3,293	$ 3,219	[1]	$ 3,160	[1]	$ 3,263	[1]	$ 3,142	[1],[2]	$ 13,796	$ 12,784	[1]	$ 11,814
Host Hotels & Resorts Inc
Revenue, Major Customer [Line Items]
Number of lodging properties operated under long-term agreements of affiliated unconsolidated partnerships	61				66								61	66		124
Revenues													1,927	2,016		2,246
Host Partnerships
Revenue, Major Customer [Line Items]
Number of lodging properties operated under long-term agreements of affiliated unconsolidated partnerships	9				10								9	10		10
Revenues													$ 106	$ 87		$ 75

[1] The sum of the earnings per share for the four quarters differs from annual earnings per share due to the required method of computing the weighted average shares in interim periods.

[2] Beginning in 2013, we changed our financial reporting cycle to a calendar year-end reporting cycle and an end-of-month quarterly reporting cycle. Accordingly, our 2013 first quarter included the period from December 29, 2012 through March 31, 2013.