Supplemental Cash Flow Information (Tables)

6 Months Ended

Jun. 30, 2019

Supplemental Cash Flow Information [Abstract]

Schedule of cash flows, supplemental disclosures

In order to determine net cash provided by operating activities, net income is adjusted by, among other things, changes in current assets and current liabilities as follows (in millions):

	Six Months Ended June 30,
	2019			2018
Decrease (increase) in current assets:
Receivables, net	$	(1,664	)	$	(595	)
Inventories	278			(46		)
Prepaid expenses and other	406			(35		)
Increase (decrease) in current liabilities:
Accounts payable	1,555			661
Accrued expenses	(195		)	(83		)
Taxes other than income taxes payable	(75		)	28
Income taxes payable	108			(375		)
Changes in current assets and current liabilities	$	413		$	(445	)

Cash flows related to interest and income taxes were as follows (in millions):

	Six Months Ended June 30,
	2019			2018
Interest paid in excess of amount capitalized, including interest on finance leases	$	227		$	248
Income taxes paid (received), net	(331		)	817

Supplemental cash flow information related to our operating and finance leases was as follows (in millions):

	Six Months Ended June 30, 2019
	Operating Leases		Finance Leases
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows	$	216	$	25
Financing cash flows	—		15
Changes in lease balances resulting from new and modified leases (a)	1,592		192

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(a) Includes noncash activity of $1.3 billion for ROU assets for operating leases recorded on January 1, 2019 upon adoption of Topic 842.