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Intangible Assets and Goodwill, Intangible Assets (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Identifiable intangible assets [Abstract] |  |  |
Gross Value | $ 4,899.6 | $ 5,135.8 |
Accumulated Amortization | (1,749.0) | (1,826.7) |
Carrying Value | 3,150.6 | 3,309.1 | $ 3,449.0
Amortization expense | 150.9 | 143.2 | 174.7
Forecasted amortization expense [Abstract] |  |  |
2022 | 169.3 |  |
2023 | 173.5 |  |
2024 | 177.6 |  |
2025 | 174.1 |  |
2026 | 166.6 |  |
Customer relationship intangibles [Member] |  |  |
Identifiable intangible assets [Abstract] |  |  |
Carrying Value | 2,960.0 |  |
Contract-based intangibles [Member] |  |  |
Identifiable intangible assets [Abstract] |  |  |
Carrying Value | 192.0 |  |
NGL Pipelines & Services [Member] |  |  |
Identifiable intangible assets [Abstract] |  |  |
Gross Value | 613.8 | 610.4 |
Accumulated Amortization | (296.6) | (276.3) |
Carrying Value | 317.2 | 334.1 |
Amortization expense | 24.3 | 25.2 | 31.9
NGL Pipelines & Services [Member] | Customer relationship intangibles [Member] |  |  |
Identifiable intangible assets [Abstract] |  |  |
Gross Value | 447.8 | 447.8 |
Accumulated Amortization | (234.5) | (221.3) |
Carrying Value | 213.3 | 226.5 |
NGL Pipelines & Services [Member] | Contract-based intangibles [Member] |  |  |
Identifiable intangible assets [Abstract] |  |  |
Gross Value | 166.0 | 162.6 |
Accumulated Amortization | (62.1) | (55.0) |
Carrying Value | 103.9 | 107.6 |
Crude Oil Pipelines & Services [Member] |  |  |
Identifiable intangible assets [Abstract] |  |  |
Gross Value | 2,478.1 | 2,478.1 |
Accumulated Amortization | (618.1) | (541.5) |
Carrying Value | 1,860.0 | 1,936.6 |
Amortization expense | 76.6 | 71.5 | 92.7
Crude Oil Pipelines & Services [Member] | Customer relationship intangibles [Member] |  |  |
Identifiable intangible assets [Abstract] |  |  |
Gross Value | 2,195.0 | 2,195.0 |
Accumulated Amortization | (355.5) | (291.6) |
Carrying Value | 1,839.5 | 1,903.4 |
Crude Oil Pipelines & Services [Member] | Contract-based intangibles [Member] |  |  |
Identifiable intangible assets [Abstract] |  |  |
Gross Value | 283.1 | 283.1 |
Accumulated Amortization | (262.6) | (249.9) |
Carrying Value | 20.5 | 33.2 |
Natural Gas Pipelines & Services [Member] |  |  |
Identifiable intangible assets [Abstract] |  |  |
Gross Value | 1,581.4 | 1,821.0 |
Accumulated Amortization | (732.7) | (916.0) |
Carrying Value | 848.7 | 905.0 |
Amortization expense | 43.1 | 38.8 | 41.4
Natural Gas Pipelines & Services [Member] | Customer relationship intangibles [Member] |  |  |
Identifiable intangible assets [Abstract] |  |  |
Gross Value | 1,350.3 | 1,350.3 |
Accumulated Amortization | (550.3) | (512.2) |
Carrying Value | 800.0 | 838.1 |
Natural Gas Pipelines & Services [Member] | Contract-based intangibles [Member] |  |  |
Identifiable intangible assets [Abstract] |  |  |
Gross Value | 231.1 | 470.7 |
Accumulated Amortization | (182.4) | (403.8) |
Carrying Value | 48.7 | 66.9 |
Petrochemical & Refined Products Services [Member] |  |  |
Identifiable intangible assets [Abstract] |  |  |
Gross Value | 226.3 | 226.3 |
Accumulated Amortization | (101.6) | (92.9) |
Carrying Value | 124.7 | 133.4 |
Amortization expense | 6.9 | 7.7 | $ 8.7
Petrochemical & Refined Products Services [Member] | Customer relationship intangibles [Member] |  |  |
Identifiable intangible assets [Abstract] |  |  |
Gross Value | 181.4 | 181.4 |
Accumulated Amortization | (75.6) | (68.3) |
Carrying Value | 105.8 | 113.1 |
Petrochemical & Refined Products Services [Member] | Contract-based intangibles [Member] |  |  |
Identifiable intangible assets [Abstract] |  |  |
Gross Value | 44.9 | 44.9 |
Accumulated Amortization | (26.0) | (24.6) |
Carrying Value | $ 18.9 | $ 20.3 |

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