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v3.19.1

Investments in Unconsolidated Affiliates (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Dec. 31, 2018
Schedule of Equity Method Investments [Line Items] |  |  |
Investments in unconsolidated affiliates | $ 2,654.3 |  | $ 2,615.1
Equity in income (loss) of unconsolidated affiliates by business segment [Abstract] |  |  |
Equity in income (loss) of unconsolidated affiliates | 154.6 | $ 115.7 |
Income Statement Data: |  |  |
Revenues | 516.5 | 396.0 |
Operating income | 338.5 | 243.7 |
Net income | 337.6 | 242.3 |
NGL Pipelines & Services [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Investments in unconsolidated affiliates | 670.3 |  | 662.0
Equity in income (loss) of unconsolidated affiliates by business segment [Abstract] |  |  |
Equity in income (loss) of unconsolidated affiliates | 30.1 | 19.4 |
Crude Oil Pipelines & Services [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Investments in unconsolidated affiliates | 1,898.0 |  | 1,867.5
Equity in income (loss) of unconsolidated affiliates by business segment [Abstract] |  |  |
Equity in income (loss) of unconsolidated affiliates | 124.6 | 97.9 |
Natural Gas Pipelines & Services [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Investments in unconsolidated affiliates | 23.2 |  | 22.8
Equity in income (loss) of unconsolidated affiliates by business segment [Abstract] |  |  |
Equity in income (loss) of unconsolidated affiliates | 1.7 | 1.0 |
Petrochemical & Refined Products Services [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Investments in unconsolidated affiliates | 62.8 |  | $ 62.8
Equity in income (loss) of unconsolidated affiliates by business segment [Abstract] |  |  |
Equity in income (loss) of unconsolidated affiliates | $ (1.8) | $ (2.6) |

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