Certain Balance Sheet Information

12 Months Ended

Dec. 31, 2021

Balance Sheet Related Disclosures [Abstract]

Property, Plant and Equipment

Property, plant and equipment consisted of the following (in millions):


	CEQP				CMLP
	December 31,				December 31,
	2021		2020		2021		2020
Gathering systems and pipelines and related assets	$	1,052.5	$	1,035.2	$	1,195.2	$	1,178.0
Facilities and equipment	2,200.6		2,193.5		2,385.8		2,378.6
Buildings, land, rights-of-way, storage rights and easements	391.8		389.0		395.5		392.7
Vehicles	17.0		13.9		14.5		12.1
Construction in process	64.7		83.6		64.7		83.6
Finance leases	12.3		13.3		12.3		13.3
Office furniture and fixtures	32.6		31.1		32.8		31.3
	3,771.5		3,759.6		4,100.8		4,089.6
Less: accumulated depreciation	992.1		842.5		1,193.0		1,028.3
Total property, plant and equipment, net	$	2,779.4	$	2,917.1	$	2,907.8	$	3,061.3

Depreciation. CEQP’s depreciation expense totaled $180.9 million, $174.8 million and $139.5 million for the years ended December 31, 2021, 2020 and 2019. CMLP’s depreciation expense totaled $195.1 million, $188.9 million and $153.5 million for the years ended December 31, 2021, 2020 and 2019.

Capitalized Interest. During the years ended December 31, 2021, 2020 and 2019, we capitalized interest of $0.4 million, $2.7 million and $14.4 million related to certain expansion projects.

Intangible Assets

Our intangible assets consisted of the following (in millions):


	December 31,
	2021		2020
Customer accounts(1)	$	488.7	$	488.7

Revenue contracts	631.2		631.2


Trademarks	6.2		6.2

	1,126.1		1,126.1
Less: accumulated amortization	393.2		331.8
Total intangible assets, net	$	732.9	$	794.3

(1)This amount includes $49.8 million related to customer accounts acquired in conjunction with the NGL Asset Acquisition which is further discussed in Note 3.

The following table summarizes total accumulated amortization of our intangible assets (in millions):


	December 31,
	2021		2020
Customer accounts	$	183.2	$	158.5

Revenue contracts	204.6		168.6


Trademarks	5.4		4.7

Total accumulated amortization	$	393.2	$	331.8

Amortization expense related to our intangible assets for the years ended December 31, 2021, 2020 and 2019, was approximately $61.4 million, $60.7 million and $54.6 million.

Estimated amortization of our intangible assets for the next five years is as follows (in millions):


Year Ending December 31,
2022	$	61.4
2023	$	57.6
2024	$	54.2
2025	$	51.5
2026	$	51.3

Accrued Expenses and Other Liabilities

Accrued expenses and other liabilities consisted of the following (in millions):



	December 31,
		2021		2020
CMLP
Accrued expenses		$	66.3	$	45.4
Accrued property taxes		4.4		8.4
Income tax payable		0.4		0.2
Interest payable		30.6		24.9
Accrued additions to property, plant and equipment		17.4		12.3
Operating leases		13.2		14.7
Finance leases		1.7		2.9
Contract liabilities		10.7		10.3
Asset retirement obligations		1.4		1.0
Total CMLP accrued expenses and other liabilities		$	146.1	$	120.1
CEQP
Accrued expenses		0.9		1.9
Income tax payable		0.1		—
Total CEQP accrued expenses and other liabilities		$	147.1	$	122.0

Other Long-Term Liabilities

Other long-term liabilities consisted of the following (in millions):



	December 31,
		2021		2020
CMLP
Contract liabilities		$	187.1	$	172.2
Operating leases		19.4		28.5
Asset retirement obligations		34.8		34.1
Other		12.8		17.0
Total CMLP other long-term liabilities		$	254.1	$	251.8
CEQP
Other		4.6		1.5
Total CEQP other long-term liabilities		$	258.7	$	253.3