Revenue Recognition (Notes)

12 Months Ended

Dec. 31, 2019

Revenue Recognition [Abstract]

Revenue from Contract with Customer [Text Block]

2. REVENUE RECOGNITION

Revenue by Category

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

Contract Liabilities

The following table presents a reconciliation of our contract liabilities:

	December 31, 2019			December 31, 2018
	(Thousands)
Balance at beginning of period	$	236,730		$	247,296
Payments received and deferred	—			—
Recognized in revenue	(10,566		)	(10,566		)
Balance at end of period	$	226,164		$	236,730

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, net of estimated reserve for refund, for the life of the related contracts; however, these rates may change based on future tariffs 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 obligation as of December 31, 2019, 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, 2019.

	Contract Liabilities		Remaining Performance Obligations
	(Thousands)
2020	$	10,568	$	2,266,208
2021	10,566		2,113,669
2022	10,566		2,026,532
2023	10,566		1,497,866
2024	10,568		1,393,435
Thereafter	173,330		12,698,673
Total	$	226,164	$	21,996,383

Accounts Receivable

Receivables from contracts with customers are included within Receivables - Trade and Receivables - Affiliates and receivables that are not related to contracts with customers are included with Receivables - Advances to affiliate and Receivables - Other in our Consolidated Balance Sheet.