Equity Allocation Between Controlling and Non-Controlling Interests (Detail) (HOST HOTELS & RESORTS, INC., USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 15, 2012	Jun. 17, 2011	Jun. 15, 2012	Jun. 17, 2011	Dec. 15, 2011
Stockholders Equity Note [Line Items]
Beginning Balance			$ 6,713		$ 6,713
Net income			82
Issuance of common stock			235
Dividends declared on common stock			(42)
Other changes in ownership			(5)
Other comprehensive loss	(25)	11	(6)	15
Ending Balance	6,977		6,977		6,713
Parent
Stockholders Equity Note [Line Items]
Beginning Balance					6,677
Net income			80
Issuance of common stock			235
Dividends declared on common stock			(42)
Other changes in ownership			(3)
Other comprehensive loss			(6)
Ending Balance	6,941		6,941		6,677
Noncontrolling Interest
Stockholders Equity Note [Line Items]
Beginning Balance					36
Net income			2
Other changes in ownership			(2)
Ending Balance	36		36		36
Redeemable non-controlling interests
Stockholders Equity Note [Line Items]
Beginning Balance					158
Net income			1
Other changes in ownership			1
Ending Balance	$ 160		$ 160		$ 158