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Subsequent Event Regarding Equity (Details) - Subsequent Event [Member] - TSRU [Member]
Oct. 26, 2016
USD ($)
Employee
trading_day
Subsequent Event [Line Items]  
Age of eligible unit holder which can elect to exercise and convert TSRUs when vested into PTUs 55 years
Award requisite service period 10 years
Trading day average used to calculate the conversion | trading_day 20
Number of employees affected by plan modification | Employee 2,900
Incremental compensation cost resulting from plan modification | $ $ 0