The amount of debt that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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-Publisher FASB

-Name Accounting Standards Codification

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The amount of employee benefit liabilities that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The level of ownership or equity interest acquired in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The net book value of a nonmonetary asset transferred or exchanged in connection with the acquisition of a business or asset in a noncash transaction. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Nonmonetary assets and liabilities are assets and liabilities that will not result in cash receipts or cash payments in the future.

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The cash inflow from an entity that is affiliated with the entity by means of direct or indirect ownership.

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Supplemental Cash Flow Information - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended		3 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2014	Mar. 31, 2013	Dec. 31, 2014
Real Estate Properties [Line Items]
Proceeds from contribution of properties to entities	$ 31.2	$ 17.7
Fibra Prologis [Member]
Real Estate Properties [Line Items]
Ownership interests received			609.7
Assumed debt	194.9		345.1
Prologis European Logistics Partners [Member]
Real Estate Properties [Line Items]
Capitalized for equity based compensation expense	18.8	10.6			21.6
Ownership interests received				1,300.0
Assumed debt				$ 353.2
Percentage of ownership interests received				50.00%