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Long-Term Compensation - LTIP Units Awards (Detail) - Long Term Incentive Plan Units [Member]
shares in Thousands
6 Months Ended
Jun. 30, 2021
$ / shares
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Number of Unvested Awards, Beginning Balance | shares 3,052
Granted | shares 1,264
Forfeited | shares (50)
Vested LTIP Units | shares (820)
Number of Unvested Awards, Ending Balance | shares 3,446
Weighted Average Grant Date Fair Value | $ / shares $ 66.50
Weighted Average, Granted | $ / shares 59.10
Weighted Average Grant Date Fair Value, Forfeited | $ / shares 55.50
Weighted Average, Vested LTIP Units | $ / shares 77.48
Weighted Average Grant Date Fair Value | $ / shares $ 61.33