Commitments and Contingent Liabilities, Contractual Obligations (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Scheduled maturities of debt obligations [Abstract]
2021	$ 1,325.0
2022	1,400.0
2023	1,250.0
2024	850.0
2025	1,150.0
Thereafter	24,171.4
Total	30,146.4	$ 27,878.4
Estimated cash interest payments [Abstract]
2021	1,294.0
2022	1,241.2
2023	1,201.0
2024	1,162.8
2025	1,121.4
Thereafter	22,814.2
Total	28,834.6
Operating lease obligations [Abstract]
2021	33.7
2022	36.1
2023	33.2
2024	29.9
2025	28.8
Thereafter	298.8
Total	460.5
Natural Gas [Member]
Estimated payment obligations:
2021	84.6
2022	70.4
2023	0.0
2024	0.0
2025	0.0
Thereafter	0.0
Total	155.0
NGLs [Member]
Estimated payment obligations:
2021	685.2
2022	696.8
2023	494.4
2024	436.4
2025	336.8
Thereafter	1,258.8
Total	3,908.4
Crude Oil [Member]
Estimated payment obligations:
2021	1,390.1
2022	1,390.1
2023	1,390.1
2024	1,354.9
2025	1,297.2
Thereafter	3,543.3
Total	10,365.7
Petrochemicals And Refined Products [Member]
Estimated payment obligations:
2021	100.9
2022	100.9
2023	76.0
2024	68.3
2025	0.0
Thereafter	0.0
Total	346.1
Estimated Payment Obligations Other [Member]
Estimated payment obligations:
2021	5.8
2022	5.9
2023	6.0
2024	5.1
2025	2.7
Thereafter	0.0
Total	25.5
Service Payment Commitments [Member]
Estimated payment obligations:
2021	62.0
2022	59.7
2023	42.3
2024	16.1
2025	12.9
Thereafter	85.8
Total	278.8
EFS Midstream Contract with Producers [Member]
Contractual obligation [Line Items]
Contractual obligation	270.0
Capital expenditures to date	$ 151.0
Contract term	10 years

Total amount spent to date for a contractual obligation.

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