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Segment Information - Assets for Reportable Segment (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Segment Reporting Asset Reconciling Item [Line Items] |  |
Total assets | $ 11,192,378 | $ 11,194,791
Same Store [Member] |  |
Segment Reporting Asset Reconciling Item [Line Items] |  |
Total assets | 10,006,979 | 10,076,511
Non-Same Store and Other |  |
Segment Reporting Asset Reconciling Item [Line Items] |  |
Total assets | 1,000,815 | 937,375
Corporate assets |  |
Segment Reporting Asset Reconciling Item [Line Items] |  |
Total assets | $ 184,584 | $ 180,905

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