Subsequent Events (Detail) - Subsequent Event	1 Months Ended
	Feb. 25, 2016 USD ($) $ / shares
Subsequent Event [Line Items]
Distribution per common unit (in dollars per share) | $ / shares	$ 0.29
Dividends payable, date of record	Feb. 23, 2016
Dividends payable, date to be paid	Mar. 02, 2016
Share repurchases authorized | $	$ 200,000,000