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Earnings Per Common Share or Unit - Computation of Basic and Diluted Earnings Per Share Unit (Parenthetical) (Detail) - shares shares in Thousands | 3 Months Ended
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Mar. 31, 2019 | Mar. 31, 2018
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items] |  |
Total weighted average potential dilutive shares and units outstanding | 27,391 | 24,650
Prologis, L.P. [Member] |  |
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items] |  |
Total weighted average potentially dilutive Class A Units | 8,356 | 8,512
Total weighted average potentially dilutive other limited partnership units | 534 | 966
Total weighted average potentially dilutive equity awards | 7,673 | 8,380
Total weighted average potential dilutive shares and units outstanding | 16,563 | 17,858
Total weighted average potential dilutive common limited partnership units | 10,828 | 6,792

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