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Partners' Capital, Equity and Incentive Compensation Plans - Summary of Award Activity Under 2010 Equity Incentive Plan and 2013 Equity Incentive Plan and Related Information (Details)
9 Months Ended
Sep. 30, 2020
$ / shares
shares
Options  
Ending balance (in shares) | shares 100,000
2013 Equity Incentive Plan | Options  
Options  
Beginning balance (in shares) | shares 1,934,838
Granted (in shares) | shares 99,872
Exercised/Vested (in shares) | shares (88,022)
Ending balance (in shares) | shares 1,946,688
Weighted average exercise price  
Beginning balance (in dollars per share) $ 37.11
Granted (in dollars per share) 56.84
Exercised/Vested (in dollars per share) 28.68
Ending balance (in dollars per share) 38.50
Weighted average fair value  
Beginning balance (in dollars per share) 7.05
Granted (in dollars per share) 9.35
Exercised/Vested (in dollars per share) 5.24
Ending balance (in dollars per share) $ 7.25
2013 Equity Incentive Plan | Restricted Stock  
Options  
Beginning balance (in shares) | shares 389,750
Granted (in shares) | shares 264,545
Exercised/Vested (in shares) | shares (220,564)
Cancelled/Expired (in shares) | shares (7,669)
Ending balance (in shares) | shares 426,062
Weighted average fair value  
Beginning balance (in dollars per share) $ 39.67
Granted (in dollars per share) 56.90
Exercised/Vested (in dollars per share) 40.09
Cancelled/Expired (in dollars per share) 48.88
Ending balance (in dollars per share) $ 49.98
2013 Equity Incentive Plan | Performance-Based Relative TSR Units  
Options  
Beginning balance (in shares) | shares 84,350
Granted (in shares) | shares 84,202
Ending balance (in shares) | shares 168,552
Weighted average fair value  
Beginning balance (in dollars per share) $ 54.64
Granted (in dollars per share) 79.18
Ending balance (in dollars per share) $ 66.90
2013 Equity Incentive Plan | Performance-Based FFO Units  
Options  
Beginning balance (in shares) | shares 84,350
Granted (in shares) | shares 84,202
Ending balance (in shares) | shares 168,552
Weighted average fair value  
Beginning balance (in dollars per share) $ 42.01
Granted (in dollars per share) 56.84
Ending balance (in dollars per share) $ 49.42
2010 Equity Incentive Plan | Class O Units  
Numbers of Class O units  
Beginning balance (in shares) | shares 82,310
Exercised/Vested (in shares) | shares (1,875)
Ending balance (in shares) | shares 80,435
Weighted average exercise price  
Beginning balance (in dollars per share) $ 25.00
Exercised/Vested (in dollars per share) 25.00
Ending balance (in dollars per share) 25.00
Weighted average fair value  
Beginning balance (in dollars per share) 5.97
Exercised/Vested (in dollars per share) 10.26
Ending balance (in dollars per share) $ 5.87