Earnings Per Unit - Summary of Computation of Basic and Diluted Earnings Per Limited Partner Unit (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net income (loss) from continuing operations	$ (14.4)	$ 16.4
General partner’s interest in net loss from continuing operations	(0.3)	0.3
Participating Securities, Distributed and Undistributed Earnings (Loss), Basic	0.0	0.1
Net income (loss) available to limited partners	$ (14.1)	$ 16.0
Denominator [Abstract]
Basic and Diluted	78,399,314	78,111,551
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	0	63,456
Basic Units [Abstract]
From continuing operations	$ (0.18)	$ 0.20
Limited partners’ interest	(0.18)	0.20
Diluted Units [Abstract]
From continuing operations	(0.18)	0.20
Limited partners' interest	$ (0.18)	$ 0.20
Weighted Average Number of Shares Outstanding, Diluted	78,399,314	78,175,007	[1]
Dilutive phantom units excluded (in shares)	0	0
Continuing Operations
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
General partner’s interest in net loss from continuing operations	$ 0.3	$ 0.3
Net income (loss) available to limited partners	$ (14.1)	$ 16.0

[1] Total diluted weighted average limited partner units outstanding excludes a de-minimis amount of unvested phantom units for the three months ended March 31, 2020.