Consolidated Statements of Changes in Members' Equity - USD ($) $ in Millions		Total		Series B Preferred Units	Series C Preferred Units	Common Units	Accumulated Other Comprehensive Loss	Non-Controlling Interest	Non-Controlling Interest Series B Preferred Units	Non-Controlling Interest Series C Preferred Units	Redeemable Non-controlling interest (Temporary Equity)
Member equity, beginning balance at Dec. 31, 2019		$ 3,806.1				$ 2,135.5	$ (11.0)	$ 1,681.6
Units outstanding, beginning balance (in shares) at Dec. 31, 2019						487,800,000
Increase (Decrease) in Members' Equity
Conversion of unit-based awards for common units, net of units withheld for taxes		(4.7)				$ (4.7)
Conversion of unit-based awards for common units, net of units withheld for taxes (in shares)						2,000,000.0
Unit-based compensation		33.0				$ 33.0
Contributions from non-controlling interests		52.6						52.6
Distributions		(353.3)				(232.7)		(120.6)			$ (0.6)
Unrealized gain (loss) on designated cash flow hedge	[1]	(4.3)	[2]				(4.3)
Fair value adjustment related to redeemable non-controlling interest		0.4									(0.6)
Redemption and repurchase of preferred units											(4.0)
Common units repurchased		$ (1.2)				$ (1.2)
Common units repurchased (in shares)		(383,614)				(400,000)
Net income (loss)		$ (315.6)				$ (421.5)		105.9
Member equity, end balance at Dec. 31, 2020		3,213.0				$ 1,508.8	(15.3)	1,719.5
Units outstanding, end balance (in shares) at Dec. 31, 2020						489,400,000
Redeemable noncontrolling interest, beginning balance at Dec. 31, 2019											5.2
Increase (Decrease) in Temporary Equity
Distributions		(353.3)				$ (232.7)		(120.6)			(0.6)
Fair value adjustment related to redeemable non-controlling interest		0.4									(0.6)
Redemption and repurchase of preferred units											(4.0)
Redeemable noncontrolling interest, ending balance at Dec. 31, 2020											0.0
Increase (Decrease) in Members' Equity
Conversion of unit-based awards for common units, net of units withheld for taxes		(2.0)				$ (2.0)
Conversion of unit-based awards for common units, net of units withheld for taxes (in shares)						1,000,000.0
Unit-based compensation		23.6				$ 23.6
Contributions from non-controlling interests		3.2						3.2
Distributions		(317.4)				(186.8)		(130.6)			(0.2)
Unrealized gain (loss) on designated cash flow hedge	[3]	13.9	[2]				13.9
Fair value adjustment related to redeemable non-controlling interest		(0.1)									0.2
Redemption and repurchase of preferred units		(50.0)						(50.0)
Common units repurchased		$ (40.1)				$ (40.1)
Common units repurchased (in shares)		(6,091,001)				(6,100,000)
Net income (loss)		$ 142.9				$ 22.4		120.5
Member equity, end balance at Dec. 31, 2021		$ 2,987.0				$ 1,325.8	(1.4)	1,662.6
Units outstanding, end balance (in shares) at Dec. 31, 2021		484,277,258				484,300,000
Increase (Decrease) in Temporary Equity
Distributions		$ (317.4)				$ (186.8)		(130.6)			(0.2)
Fair value adjustment related to redeemable non-controlling interest		(0.1)									0.2
Redemption and repurchase of preferred units		(50.0)						(50.0)
Redeemable noncontrolling interest, ending balance at Dec. 31, 2021											$ 0.0
Increase (Decrease) in Members' Equity
Conversion of unit-based awards for common units, net of units withheld for taxes		(16.1)				$ (16.1)
Conversion of unit-based awards for common units, net of units withheld for taxes (in shares)						3,100,000
Unit-based compensation		31.8				$ 31.8
Contributions from non-controlling interests		32.9						32.9
Distributions		(384.3)				(221.4)		(162.9)
Unrealized gain (loss) on designated cash flow hedge	[4]	1.4	[2]				1.4
Redemption and repurchase of preferred units				$ (50.5)	$ (15.2)				$ (50.5)	$ (15.2)
Common units repurchased		$ (175.0)				$ (175.0)
Common units repurchased (in shares)		(18,374,054)				(18,400,000)
Net income (loss)		$ 500.7				$ 361.3		139.4
Member equity, end balance at Dec. 31, 2022		$ 2,912.7				$ 1,306.4	$ 0.0	1,606.3
Units outstanding, end balance (in shares) at Dec. 31, 2022		468,980,630				469,000,000.0
Increase (Decrease) in Temporary Equity
Distributions		$ (384.3)				$ (221.4)		$ (162.9)
Redemption and repurchase of preferred units				$ (50.5)	$ (15.2)				$ (50.5)	$ (15.2)

[1] Includes a tax benefit of $1.3 million.

[2] Includes tax expense of $0.5 million and $4.3 million for the years ended December 31, 2022 and 2021, respectively, and a tax benefit of $1.3 million for the year ended December 31, 2020.

[3] Includes a tax expense of $4.3 million.

[4] Includes a tax expense of $0.5 million.