Consolidated Statement of Partners' Capital - USD ($) $ in Millions	Total	Common Unitholders	Accumulated Other Comprehensive Loss
Beginning balance at Dec. 31, 2019	$ 2,715.0	$ 2,877.1	$ (162.1)
Comprehensive income:
Net income	817.0	817.0
Total other comprehensive income (loss)	(21.1)		(21.1)
Comprehensive income	795.9	817.0	(21.1)
Distributions	(927.1)	(927.1)
Equity-based incentive compensation expense	12.0	12.0
Repurchase of common units	(276.9)	(276.9)
Issuance of common units in settlement of equity-based incentive plan awards	0.6	0.6
Payments associated with settlement of equity-based incentive compensation	(14.7)	(14.7)
Other	(1.0)	(1.0)
Ending balance at Dec. 31, 2020	2,303.8	2,487.0	(183.2)
Comprehensive income:
Net income	982.0	982.0
Total other comprehensive income (loss)	28.2		28.2
Comprehensive income	1,010.2	982.0	28.2
Distributions	(906.4)	(906.4)
Equity-based incentive compensation expense	21.8	21.8
Repurchase of common units	(523.1)	(523.1)
Issuance of common units in settlement of equity-based incentive plan awards	0.5	0.5
Payments associated with settlement of equity-based incentive compensation	(6.2)	(6.2)
Other	(0.8)	(0.8)
Ending balance at Dec. 31, 2021	1,899.8	2,054.8	(155.0)
Comprehensive income:
Net income	1,036.4	1,036.4
Total other comprehensive income (loss)	61.1		61.1
Comprehensive income	1,097.5	1,036.4	61.1
Distributions	(870.0)	(870.0)
Equity-based incentive compensation expense	38.5	38.5
Repurchase of common units	(472.3)	(472.3)
Issuance of common units in settlement of equity-based incentive plan awards	1.1	1.1
Payments associated with settlement of equity-based incentive compensation	(8.9)	(8.9)
Other	(0.8)	(0.8)
Ending balance at Dec. 31, 2022	$ 1,684.9	$ 1,778.8	$ (93.9)