Certain Balance Sheet Information

Property, Plant and Equipment

Property, plant and equipment consisted of the following at December 31, 2018 and 2017 (in millions):



	CEQP				CMLP
	December 31,				December 31,
	2018		2017		2018		2017
Gathering systems and pipelines and related assets	$	758.6	$	678.0	$	901.5	$	820.9
Facilities and equipment	1,230.7		1,141.4		1,415.9		1,326.5
Buildings, land, rights-of-way, storage rights and easements	331.7		319.1		335.4		322.8
Vehicles	17.9		37.3		16.1		35.5
Construction in process	230.8		87.5		230.8		87.5
Office furniture and fixtures	28.4		21.9		28.5		22.1
	2,598.1		2,285.2		2,928.2		2,615.3
Less: accumulated depreciation and depletion	568.4		464.4		725.9		607.8
Total property, plant and equipment, net	$	2,029.7	$	1,820.8	$	2,202.3	$	2,007.5

Depreciation. CEQP’s depreciation expense totaled $123.6 million, $135.9 million and $154.8 million for the years ended December 31, 2018, 2017 and 2016. CMLP’s depreciation expense totaled $137.7 million, $150.0 million and $168.9 million for the years ended December 31, 2018, 2017 and 2016. Depletion expense at both CEQP and CMLP totaled $0.7 million for the years ended December 31, 2017 and 2016. We had no depletion expense for the year ended December 31, 2018.

Capitalized Interest. During the years ended December 31, 2018, 2017 and 2016, CEQP and CMLP capitalized interest of $5.0 million, $2.9 million and $0.7 million related to certain expansion projects.

Capital Leases. We had capital lease assets of $9.7 million and $2.1 million included in property, plant and equipment, net at December 31, 2018 and 2017, primarily related to certain vehicle leases.

Intangible Assets

Intangible assets consisted of the following at December 31, 2018 and 2017 (in millions):



	CEQP				CMLP
	December 31,				December 31,
	2018		2017		2018		2017
Customer accounts	$	438.9	$	438.9	$	438.9	$	438.9
Gas gathering, compression and processing contracts	325.2		325.2		325.2		325.2
Trademarks⁽¹⁾	6.2		24.7		6.2		9.2
	770.3		788.8		770.3		773.3
Less: accumulated amortization	216.5		191.6		216.5		177.6
Total intangible assets, net	$	553.8	$	597.2	$	553.8	$	595.7


(1)	As of December 31, 2018, we fully amortized and eliminated certain intangibles associated with our trademarks.

The following table summarizes total accumulated amortization of our intangible assets at December 31, 2018 and 2017 (in millions):



	CEQP				CMLP
	December 31,				December 31,
	2018		2017		2018		2017
Customer accounts	$	112.1	$	89.8	$	112.1	$	89.8
Gas gathering, compression and processing contracts	100.8		82.0		100.8		82.0
Trademarks	3.6		19.8		3.6		5.8
Total accumulated amortization	$	216.5	$	191.6	$	216.5	$	177.6

Crestwood Equity’s amortization expense related to its intangible assets for the years ended December 31, 2018, 2017 and 2016, was approximately $43.5 million, $53.7 million and $72.5 million. Crestwood Midstream’s amortization expense related to its intangible assets for the years ended December 31, 2018, 2017 and 2016 was approximately $42.1 million, $50.6 million and $69.3 million.

Estimated amortization of CEQP’s and CMLP’s intangible assets for the next five years is as follows (in millions):



Year Ending December 31,
2019	$	41.7
2020	41.7
2021	41.7
2022	41.7
2023	37.7

Accrued Expenses and Other Liabilities

Accrued expenses and other liabilities consisted of the following at December 31, 2018 and 2017 (in millions):



	CEQP				CMLP
	December 31,				December 31,
	2018		2017		2018		2017
Accrued expenses⁽¹⁾	$	64.8	$	56.6	$	63.7	$	55.5
Accrued property taxes	2.6		4.8		2.6		4.8
Income tax payable	0.3		0.3		0.3		0.3
Interest payable	19.8		20.3		19.8		20.3
Accrued additions to property, plant and equipment	10.5		22.3		10.5		22.2
Capital leases	2.4		1.0		2.4		1.0
Deferred revenue	12.0		0.6		12.0		0.6
Total accrued expenses and other liabilities	$	112.4	$	105.9	$	111.3	$	104.7


(1)	Includes $16.2 million of related party accrued expenses at December 31, 2018 related to deposits received from Jackalope, our 50% equity method investment.