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Additional Information on RSUs (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 30, 2011	Dec. 31, 2010	Jan. 01, 2010
Reconciliation of Restricted Stock Activity [Line Items]
Share-based compensation expense (in millions)	$ 86.0	$ 90.0	$ 85.0
Restricted Stock Units
Reconciliation of Restricted Stock Activity [Line Items]
Share-based compensation expense (in millions)	73.0	76.0	71.0
Weighted average grant-date fair value (per unit)	$ 40	$ 27	$ 19
Aggregate intrinsic value of converted and distributed Marriott RSUs (in millions)	$ 113	$ 79	$ 39

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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