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DEBT (Tables)

12 Months Ended

Dec. 31, 2019

Long-term Debt, Unclassified [Abstract]

Debt

The following table sets forth our consolidated debt for the periods indicated:

		December 31, 2019				December 31, 2018
		(Thousands of dollars)
Commercial paper outstanding, bearing a weighted-average interest rate of 2.16% as of December 31, 2019		$	220,000			$	—
Senior unsecured obligations:
$500,000 at 8.625% due March 2019		—				500,000
$300,000 at 3.8% due March 2020		—				300,000
$1,500,000 term loan, rate of 2.70% and 3.63% as of December 31, 2019 and 2018, respectively, due November 2021		1,250,000				550,000
$700,000 at 4.25% due February 2022		547,397				547,397
$900,000 at 3.375 % due October 2022		900,000				900,000
$425,000 at 5.0 % due September 2023		425,000				425,000
$500,000 at 7.5% due September 2023		500,000				500,000
$500,000 at 2.75% due September 2024		500,000				—
$500,000 at 4.9 % due March 2025		500,000				500,000
$500,000 at 4.0% due July 2027		500,000				500,000
$800,000 at 4.55% due July 2028		800,000				800,000
$100,000 at 6.875% due September 2028		100,000				100,000
$700,000 at 4.35% due March 2029		700,000				—
$750,000 at 3.4% due September 2029		750,000				—
$400,000 at 6.0% due June 2035		400,000				400,000
$600,000 at 6.65% due October 2036		600,000				600,000
$600,000 at 6.85% due October 2037		600,000				600,000
$650,000 at 6.125% due February 2041		650,000				650,000
$400,000 at 6.2% due September 2043		400,000				400,000
$700,000 at 4.95% due July 2047		700,000				700,000
$1,000,000 at 5.2% due July 2048		1,000,000				450,000
$750,000 at 4.45% due September 2049		750,000				—
Guardian Pipeline
Weighted average 7.85% due December 2022		21,307				28,957
Total debt		12,813,704				9,451,354
Unamortized portion of terminated swaps		15,032				16,750
Unamortized debt issuance costs and discounts		(121,329		)		(87,120		)
Current maturities of long-term debt		(7,650		)		(507,650		)
Short-term borrowings (a)		(220,000		)		—
Long-term debt		$	12,479,757			$	8,873,334

(a) - Individual issuances of commercial paper under our commercial paper program generally mature in 90 days or less.

Aggregate maturities of long-term debt outstanding

The aggregate maturities of long-term debt outstanding as of December 31, 2019, for the years 2020 through 2024 are shown below:

		Senior Unsecured Obligations				Guardian Pipeline				Total
		(Millions of dollars)
2020		$	—			$	7.7			$	7.7
2021		$	1,250.0			$	7.7			$	1,257.7
2022		$	1,447.4			$	5.9			$	1,453.3
2023		$	925.0			$	—			$	925.0
2024		$	500.0			$	—			$	500.0

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- References

No definition available.

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- Definition

Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation.

+ References

No definition available.

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- Definition

Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

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