UNAUDITED CONDENSED STATEMENTS OF CONSOLIDATED EQUITY - USD ($) $ in Millions	Total	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interests in Consolidated Subsidiaries [Member]	Common Limited Partners Interests [Member]	Treasury Units [Member]
Balance at Dec. 31, 2019	$ 25,827.5	$ 71.4	$ 1,063.5	$ 24,692.6	$ 0.0
Increase (Decrease) in Partners' Equity [Roll Forward]
Net income	3,519.8	0.0	82.4	3,437.4	0.0
Cash distributions paid to common unitholders	(2,919.6)	0.0	0.0	(2,919.6)	0.0
Cash payments made in connection with distribution equivalent rights	(20.0)	0.0	0.0	(20.0)	0.0
Cash distributions paid to noncontrolling interests	(97.8)	0.0	(97.8)	0.0	0.0
Cash contributions from noncontrolling interests	21.2	0.0	21.2	0.0	0.0
Amortization of fair value of equity-based awards	120.1	0.0	0.0	120.1	0.0
Repurchase and cancellation of common units under 2019 Buyback Program	(173.8)	0.0	0.0	(173.8)	0.0
Common units issued to Skyline North Americas, Inc. in connection with settlement of Liquidity Option	1,297.3	0.0	0.0	1,297.3	0.0
Treasury units acquired in connection with settlement of Liquidity Option, at cost	(1,297.3)	0.0	0.0	0.0	(1,297.3)
Common units exchanged for preferred units, with common units received being immediately cancelled	(17.5)	0.0	0.0	(17.5)	0.0
Cash flow hedges	(120.6)	(120.6)	0.0	0.0	0.0
Other, net	(34.6)	(0.1)	0.1	(34.6)	0.0
Balance at Sep. 30, 2020	26,104.7	(49.3)	1,069.4	26,381.9	(1,297.3)
Balance at Jun. 30, 2020	25,941.4	(147.1)	1,064.7	26,321.1	(1,297.3)
Increase (Decrease) in Partners' Equity [Roll Forward]
Net income	1,084.0	0.0	31.4	1,052.6	0.0
Cash distributions paid to common unitholders	(972.7)	0.0	0.0	(972.7)	0.0
Cash payments made in connection with distribution equivalent rights	(7.1)	0.0	0.0	(7.1)	0.0
Cash distributions paid to noncontrolling interests	(36.0)	0.0	(36.0)	0.0	0.0
Cash contributions from noncontrolling interests	1.5	0.0	1.5	0.0	0.0
Amortization of fair value of equity-based awards	39.5	0.0	0.0	39.5	0.0
Repurchase and cancellation of common units under 2019 Buyback Program	(33.7)	0.0	0.0	(33.7)	0.0
Common units exchanged for preferred units, with common units received being immediately cancelled	(17.5)	0.0	0.0	(17.5)	0.0
Cash flow hedges	97.8	97.8	0.0	0.0	0.0
Other, net	7.5	0.0	7.8	(0.3)	0.0
Balance at Sep. 30, 2020	26,104.7	(49.3)	1,069.4	26,381.9	(1,297.3)
Balance at Dec. 31, 2020	25,377.4	(165.2)	1,073.3	25,766.6	(1,297.3)
Increase (Decrease) in Partners' Equity [Roll Forward]
Net income	3,688.0	0.0	82.3	3,605.7	0.0
Cash distributions paid to common unitholders	(2,948.5)	0.0	0.0	(2,948.5)	0.0
Cash payments made in connection with distribution equivalent rights	(23.1)	0.0	0.0	(23.1)	0.0
Cash distributions paid to noncontrolling interests	(115.1)	0.0	(115.1)	0.0	0.0
Cash contributions from noncontrolling interests	23.0	0.0	23.0	0.0	0.0
Amortization of fair value of equity-based awards	114.6	0.0	0.0	114.6	0.0
Repurchase and cancellation of common units under 2019 Buyback Program	(88.8)	0.0	0.0	(88.8)	0.0
Cash flow hedges	(6.4)	(6.4)	0.0	0.0	0.0
Other, net	(36.5)	(0.2)	(0.1)	(36.2)	0.0
Balance at Sep. 30, 2021	25,984.6	(171.8)	1,063.4	26,390.3	(1,297.3)
Balance at Jun. 30, 2021	25,846.8	(198.7)	1,074.0	26,268.8	(1,297.3)
Increase (Decrease) in Partners' Equity [Roll Forward]
Net income	1,181.3	0.0	28.3	1,153.0	0.0
Cash distributions paid to common unitholders	(983.5)	0.0	0.0	(983.5)	0.0
Cash payments made in connection with distribution equivalent rights	(7.9)	0.0	0.0	(7.9)	0.0
Cash distributions paid to noncontrolling interests	(43.7)	0.0	(43.7)	0.0	0.0
Cash contributions from noncontrolling interests	4.9	0.0	4.9	0.0	0.0
Amortization of fair value of equity-based awards	35.1	0.0	0.0	35.1	0.0
Repurchase and cancellation of common units under 2019 Buyback Program	(74.9)	0.0	0.0	(74.9)	0.0
Cash flow hedges	26.8	26.8	0.0	0.0	0.0
Other, net	(0.3)	0.1	(0.1)	(0.3)	0.0
Balance at Sep. 30, 2021	$ 25,984.6	$ (171.8)	$ 1,063.4	$ 26,390.3	$ (1,297.3)