Revenue Recognition Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2019

Contract with Customer, Asset and Liability [Table Text Block]

The following table presents a reconciliation of our contract liabilities:



		Year to Date March 31, 2019
	(Thousands)
Balance at beginning of period		$	236,730
Payments received and deferred		—
Recognized in revenue		(2,638		)
Balance at end of period		$	234,092

Contract with Customer, Liability [Table Text Block]

The following table presents the amount of the contract liabilities balance as of March 31, 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)	$	7,928
2020	10,568
2021	10,566
2022	10,566
2023	10,566
Thereafter	183,898
Total	$	234,092

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]

The following table presents the transaction price allocated to the remaining performance obligations under certain contracts as of March 31, 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 March 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.



	(Thousands)
2019 (remainder)	$	1,637,961
2020	2,060,759
2021	1,970,683
2022	1,673,295
2023	1,442,724
Thereafter	13,219,316
Total	$	22,004,738