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- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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- Definition

The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-Glossary Impairment

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- Definition

Amount of interest capitalized during the period.

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Allowance for Funds Used during Construction

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- Definition

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

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Property and Equipment - Additional Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014 hotel	Dec. 31, 2014	Dec. 31, 2013	Dec. 28, 2012
Property, Plant and Equipment [Line Items]
Depreciation expense		$ 135us-gaap_Depreciation	$ 107us-gaap_Depreciation	$ 93us-gaap_Depreciation
Property and equipment, net		1,460us-gaap_PropertyPlantAndEquipmentNet	1,543us-gaap_PropertyPlantAndEquipmentNet
Number of hotels	3mar_AssetsHeldforsaleNumberofHotels
International Operations \| Total segment
Property, Plant and Equipment [Line Items]
Property and equipment, net		291	238
Property and Equipment
Property, Plant and Equipment [Line Items]
Interest capitalized		33	31	27
Impairment charge		25
Lower Limit
Property, Plant and Equipment [Line Items]
Estimated useful lives		3 years
Upper Limit
Property, Plant and Equipment [Line Items]
Estimated useful lives		40 years
Reimbursed Costs
Property, Plant and Equipment [Line Items]
Depreciation expense		$ 51	$ 48	$ 45