Revenue Recognition (Notes)

6 Months Ended

Jun. 30, 2019

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 Condensed Consolidated Statement of Comprehensive Income.

Contract Liabilities

The following table presents a reconciliation of our contract liabilities:



	Quarter to Date June 30, 2019			Year to Date June 30, 2019
	(Thousands)
Balance at beginning of period	$	234,092		$	236,730
Payments received and deferred	—			—
Recognized in revenue	(2,641		)	(5,279		)
Balance at end of period	$	231,451		$	231,451

The following table presents the amount of the contract liabilities balance as of June 30, 2019, expected to be recognized as revenue in each of the next five years as performance obligations are expected to be satisfied:



	(Thousands)
2019 (remainder)	$	5,287
2020	10,568
2021	10,566
2022	10,566
2023	10,566
Thereafter	183,898
Total	$	231,451

Remaining Performance Obligations

The following table presents the transaction price allocated to the remaining performance obligations under certain contracts as of June 30, 2019. These 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. It also excludes consideration that will be recognized in future periods (see above for Contract Liabilities and the expected recognition of those amounts within revenue). Certain of our contracts contain evergreen provisions for periods beyond the initial term of the contract. The remaining performance obligations as of June 30, 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.



	(Thousands)
2019 (remainder)	$	1,110,171
2020	2,115,390
2021	1,994,257
2022	1,766,701
2023	1,447,332
Thereafter	13,545,469
Total	$	21,979,320

Accounts Receivable

Receivables from contracts with customers are included within Receivables - Trade and other and Receivables - Affiliates and receivables that are not related to contracts with customers are included with Receivables - Advances to affiliate in our Condensed Consolidated Balance Sheet. At June 30, 2019 and December 31, 2018, Receivables - Trade and other includes $12.6 million and $10.4 million, respectively, of receivables not related to contracts with customers.