Transactions with Affiliates (Details) $ in Thousands	3 Months Ended
Mar. 31, 2020 USD ($) employee	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Related Party Transaction [Line Items]
Advances to affiliate	$ 234,687		$ 201,265
Related party transaction, rate	0.27%
Entity number of employees \| employee	0
Related party transaction, expenses from transactions with related party	$ 22,700	$ 22,100
Cash distributions to parent	45,000	21,000
Williams Companies Inc [Member]
Related Party Transaction [Line Items]
Advances to affiliate	234,700		$ 201,300
Interest Income, Related Party	$ 500	$ 1,000

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Amounts due from parties associated with the reporting entity as evidenced by a written promise to pay, due within 1 year (or 1 business cycle).

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The distributions of earnings to an entity that is affiliated with the reporting entity by means of direct or indirect ownership.

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Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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