Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2018

Supplemental Cash Flow Information [Abstract]

The following summarizes cash paid (received) for interest and income taxes, as well as non-cash investing and financing activities, for the years ended December 31:



millions	2018			2017			2016
Cash paid (received)
Interest, net of amounts capitalized	$	982		$	906		$	856
Income taxes, net of refunds ⁽¹⁾	51			64			(882		)
Non-cash investing activities
Fair value of properties and equipment acquired	$	22		$	640		$	3
Asset retirement cost additions	523			66			298
Accruals of property, plant, and equipment	822			824			549
Net liabilities assumed (divested) in acquisitions and divestitures	(111		)	(158		)	723
Non-cash investing and financing activities
Acquisition contingent consideration	$	—		$	—		$	103
Non-cash financing activities
Settlement of tangible equity units	$	300		$	—		$	—


⁽¹⁾	Includes $881 million from a tax refund in 2016 related to the income tax benefit associated with the Company’s 2015 tax net operating loss carryback.

Schedule of Cash and Cash Equivalents Balance Sheet Locations

The following table provides a reconciliation of Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents as reported in the Consolidated Statement of Cash Flows to the line items within the Consolidated Balance Sheets:



	December 31,
millions	2018		2017
Cash and cash equivalents	$	1,295	$	4,553
Restricted cash and restricted cash equivalents included in Other Assets	134		121
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents	$	1,429	$	4,674