Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]
Percentage of agreement indemnification	100.00%
Outstanding performance and surety bonds	$ 54.5	$ 25.5

Percentage of Actual Capital Gains Tax Liabilities Used For Indemnification Amount

No definition available.

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Namespace Prefix:	pld_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration