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, 2017	$ 22,772.4	$ (171.7)	$ 225.2	$ 22,718.9	$ 0.0
Increase (Decrease) in Partners' Equity [Roll Forward]
Net income	4,238.5	0.0	66.1	4,172.4	0.0
Cash distributions paid to common unitholders	(3,726.9)	0.0	0.0	(3,726.9)	0.0
Cash payments made in connection with distribution equivalent rights	(17.7)	0.0	0.0	(17.7)	0.0
Cash distributions paid to noncontrolling interests	(81.6)	0.0	(81.6)	0.0	0.0
Cash contributions from noncontrolling interests	238.1	0.0	238.1	0.0	0.0
Net cash proceeds from the issuance of common units	538.4	0.0	0.0	538.4	0.0
Common units issued in connection with employee compensation	39.1	0.0	0.0	39.1	0.0
Common units issued in connection with land acquisition	30.0	0.0	0.0	30.0	0.0
Repurchase and cancellation of common units under buyback programs	(30.8)	0.0	0.0	(30.8)	0.0
Amortization of fair value of equity-based awards	104.7	0.0	0.0	104.7	0.0
Cash flow hedges	223.1	223.1	0.0	0.0	0.0
Other, net	(35.1)	(0.5)	(9.1)	(25.5)	0.0
Balance at Dec. 31, 2018	24,292.2	50.9	438.7	23,802.6	0.0
Increase (Decrease) in Partners' Equity [Roll Forward]
Net income	4,687.1	0.0	95.8	4,591.3	0.0
Cash distributions paid to common unitholders	(3,839.8)	0.0	0.0	(3,839.8)	0.0
Cash payments made in connection with distribution equivalent rights	(22.1)	0.0	0.0	(22.1)	0.0
Cash distributions paid to noncontrolling interests	(106.2)	0.0	(106.2)	0.0	0.0
Cash contributions from noncontrolling interests	632.8	0.0	632.8	0.0	0.0
Net cash proceeds from the issuance of common units	82.2	0.0	0.0	82.2	0.0
Common units issued in connection with employee compensation	45.6	0.0	0.0	45.6	0.0
Repurchase and cancellation of common units under buyback programs	(81.1)	0.0	0.0	(81.1)	0.0
Amortization of fair value of equity-based awards	143.3	0.0	0.0	143.3	0.0
Cash flow hedges	21.1	21.1	0.0	0.0	0.0
Other, net	(27.6)	(0.6)	2.4	(29.4)	0.0
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	3,884.8	0.0	110.1	3,774.7	0.0
Cash distributions paid to common unitholders	(3,891.0)	0.0	0.0	(3,891.0)	0.0
Cash payments made in connection with distribution equivalent rights	(27.1)	0.0	0.0	(27.1)	0.0
Cash distributions paid to noncontrolling interests	(131.3)	0.0	(131.3)	0.0	0.0
Cash contributions from noncontrolling interests	30.9	0.0	30.9	0.0	0.0
Repurchase and cancellation of common units under buyback programs	(186.3)	0.0	0.0	(186.3)	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
Amortization of fair value of equity-based awards	158.6	0.0	0.0	158.6	0.0
Cash flow hedges	(236.5)	(236.5)	0.0	0.0	0.0
Other, net	(34.7)	(0.1)	0.1	(34.7)	0.0
Balance at Dec. 31, 2020	$ 25,377.4	$ (165.2)	$ 1,073.3	$ 25,766.6	$ (1,297.3)