Other Expense

3 Months Ended

Mar. 31, 2018

Other Income and Expenses [Abstract]

Other Expense

Other Expense

The following table provides the components of the Company's other expense for the three months ended March 31, 2018 and 2017:

	Three Months Ended March 31,
	2018		2017
	(in millions)
Transportation commitment charges (a)	$	34	$	40
Loss from vertical integration services (b)	6		5
Other	17		15
Total other expense	$	57	$	60

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(a) Primarily represents firm transportation payments on excess pipeline capacity commitments.

(b) Loss from vertical integration services primarily represents net margins (attributable to third party working interest owners) that result from Company-provided fracture stimulation and well service operations, which are ancillary to and supportive of the Company's oil and gas joint operating activities, and do not represent intercompany transactions. For the three months ended March 31, 2018, these vertical integration net margins included $34 million of revenues and $40 million of costs and expenses. For the same period in 2017, these vertical integration net margins included $19 million of revenues and $24 million of costs and expenses.