Revenue Recognition Revenue Recognition (Notes)

12 Months Ended

Dec. 31, 2020

Revenue Recognition [Abstract]

Revenue from Contract with Customer [Text Block]

REVENUE RECOGNITION

Revenue by Category

Our revenue disaggregation by major service line includes Natural gas transportation, Natural gas storage, and Other, which are separately presented on the Statement of Net Income.

Contract Assets

The following table presents a reconciliation of our contract assets:

	Year ended December 31,
	2020		2019
	(Thousands)
Balance at beginning of period	$	554	$	—
Revenue recognized in excess of amounts invoiced	2,841		554
Balance at end of period	$	3,395	$	554

Contract Liabilities

The following table presents a reconciliation of our contract liabilities:

	Year ended December 31,
	2020		2019
	(Thousands)
Balance at beginning of period	$	5,464	$	—
Recorded contract liabilities	—		5,464
Recognized in Revenue	(854)		—
Balance at end of period	$	4,610	$	5,464

Remaining Performance Obligations

Our remaining performance obligations primarily include reservation charges on contracted capacity on our firm transportation and storage contracts with customers. Amounts from certain contracts included in the table below, which are subject to the periodic review and approval by the FERC, reflect the rates for such services in our current FERC tariffs for the life of the related contracts; however, these rates may change based on future rate cases or settlements approved by the FERC and the amount and timing of these changes is not currently known. This table excludes the variable consideration component for commodity charges. Certain of our contracts contain evergreen provisions for periods beyond the initial term of the contract. The remaining performance obligations as of December 31, 2020, do not consider potential future performance obligations for which the renewal has not been exercised. The table below also does not include contracts with customers for which the underlying facilities have not received FERC authorization to be placed into service.

The following table presents the amount of the contract liabilities balance expected to be recognized as revenue when performance obligations are satisfied and the transaction price allocated to the remaining performance obligations under certain contracts as of December 31, 2020.

	Contract Liabilities		Remaining Performance Obligations
	(Thousands)
2021	$	938	$	422,298
2022	1,029		408,593
2023	1,120		365,882
2024	1,218		335,757
2025	305		332,389
Thereafter	—		2,659,570
Total	$	4,610	$	4,524,489

Accounts Receivable

Receivables from contracts with customers are included within Receivables - Trade and Receivables - Affiliated companies and receivables that are not related to contracts with customers are included within the balance of Receivables - Advances to affiliate and Receivables - Other in our Balance Sheet.