Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2021

Fair Value Disclosures [Abstract]

Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis

The table below summarizes assets and liabilities measured at fair value on a recurring basis.

	Gross derivative instruments recorded in the Condensed Consolidated Balance Sheets		Fair value measurements at reporting date using:
			Quoted prices in active markets for identical assets (Level 1)		Significant other observable inputs (Level 2)		Significant unobservable inputs (Level 3)
	(Thousands)
September 30, 2021
Asset derivative instruments, at fair value	$	1,428,073	$	216,702	$	1,211,371	$	—
Liability derivative instruments, at fair value	5,715,608		460,180		5,255,428		—
December 31, 2020
Asset derivative instruments, at fair value	$	527,073	$	70,603	$	456,470	$	—
Liability derivative instruments, at fair value	600,877		93,361		507,516		—