Other Long-term Liabilities (Tables)

12 Months Ended

Dec. 31, 2023

Other Liabilities, Noncurrent [Abstract]

Schedule of Other Long-term Liabilities

Other long-term liabilities are comprised of the following obligations:

	December 31, 2023		December 31, 2022
Deferred revenue	$	248.8	$	198.8
Asset retirement obligations		103.0		97.9
Operating lease liabilities		56.5		28.6
Other liabilities		6.8		15.9
Total other long-term liabilities	$	415.1	$	341.2

Components of deferred revenue

The following table shows the components of deferred revenue:

	December 31, 2023		December 31, 2022
Splitter agreement	$	129.0	$	129.0
Gas contract amendment		29.8		32.3
Contributions in aid of construction (1)		86.4		31.7
Other		3.6		5.8
Total deferred revenue	$	248.8	$	198.8

(1)Increase in contributions in aid of construction was due to additions of deferred revenue in West Texas and Badlands.

Changes in Deferred revenue

The following table shows the changes in deferred revenue:

	2023			2022
Balance at beginning of period	$	198.8		$	171.8
Additions		67.4			34.5
Revenue recognized		(17.4	)		(7.5	)
Balance at end of period	$	248.8		$	198.8

Changes in Aggregate Asset Retirement Obligations

The changes in our ARO are as follows:

	2023			2022
Beginning of period	$	97.9		$	72.1
Additions (1)		—			20.2
Accretion expense		5.9			4.8
Change in cash flow estimate		4.9			0.8
Retirements		(5.7	)		—
End of period	$	103.0		$	97.9

(1)Amount reflects additions of ARO in 2022 related to the Delaware Basin Acquisition.