Annual report pursuant to Section 13 and 15(d)

EQUITY-BASED AWARDS - Performance-Based LTIP Units Valuation Assumptions (Details)

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EQUITY-BASED AWARDS - Performance-Based LTIP Units Valuation Assumptions (Details) - Performance-Based LTIP Units
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Valuation Assumptions      
Risk-free interest rate 1.37% 2.51% 2.04%
Dividend yield 4.13% 4.54% 4.11%
Expected volatility 24.43% 25.40% 24.44%