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Other Commitments And Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract] |
Contractual Obligation, Fiscal Year Maturity Schedule [Table Text Block] | Contractual Obligations. We have certain contractual obligations requiring payments at specified periods. The obligations include long-term debt, lease obligations, energy commodity contracts and obligations for various services including pipeline capacity and outsourcing of IT services. The total contractual obligations in existence at December 31, 2018 and their maturities were:
(in millions) | Total |  | 2019 |  | 2020 |  | 2021 |  | 2022 |  | 2023 |  | After
Long-term debt (1) | $ | 7,029.6 |  |  | $ | 41.0 |  |  | $ | — |  |  | $ | 63.6 |  |  | $ | 530.0 |  |  | $ | 600.0 |  |  | $ | 5,795.0 |
Capital leases(2) | 322.4 |  |  | 23.0 |  |  | 22.5 |  |  | 22.6 |  |  | 22.1 |  |  | 19.8 |  |  | 212.4 |
Interest payments on long-term debt | 6,311.7 |  |  | 319.8 |  |  | 318.6 |  |  | 318.6 |  |  | 315.0 |  |  | 289.0 |  |  | 4,750.7 |
Operating leases(3) | 45.9 |  |  | 11.0 |  |  | 7.3 |  |  | 6.1 |  |  | 4.2 |  |  | 2.8 |  |  | 14.5 |
Energy commodity contracts | 154.3 |  |  | 99.2 |  |  | 55.1 |  |  | — |  |  | — |  |  | — |  |  | — |
Service obligations: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pipeline service obligations | 3,566.7 |  |  | 592.3 |  |  | 487.7 |  |  | 450.5 |  |  | 437.5 |  |  | 260.8 |  |  | 1,337.9 |
IT service obligations | 211.0 |  |  | 68.3 |  |  | 60.0 |  |  | 47.1 |  |  | 35.6 |  |  | — |  |  | — |
Other service obligations | 86.7 |  |  | 33.5 |  |  | 43.6 |  |  | 9.6 |  |  | — |  |  | — |  |  | — |
Other liabilities | 24.2 |  |  | 24.2 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Total contractual obligations | $ | 17,752.5 |  |  | $ | 1,212.3 |  |  | $ | 994.8 |  |  | $ | 918.1 |  |  | $ | 1,344.4 |  |  | $ | 1,172.4 |  |  | $ | 12,110.5 |
(1) Long-term debt balance excludes unamortized issuance costs and discounts of $68.5 million. (2) Capital lease payments shown above are inclusive of interest totaling $114.6 million. (3) Operating lease balances do not include amounts for fleet leases that can be renewed beyond the initial lease term. The Company anticipates renewing the leases beyond the initial term, but the anticipated payments associated with the renewals do not meet the definition of expected minimum lease payments and therefore are not included above. Expected payments are $26.7 million in 2019, $22.4 million in 2020, $16.6 million in 2021, $12.3 million in 2022, $9.3 million in 2023 and $8.8 million thereafter.

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- Definition Tabular disclosure of the aggregate amount of payments due on known contractual obligations for the five years following the date of the latest balance sheet and the combined aggregate amount of maturities of known contractual obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 303 -Paragraph a -Subparagraph 5 + Details
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