Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2018

Supplemental Cash Flow Elements [Abstract]

Schedule of supplemental cash flow information

Supplemental cash flow information is as follows (amounts in millions):

	For the Years Ended December 31,
	2018		2017		2016
Supplemental cash flow information:
Cash paid for income taxes, net of refunds	$	560	$	176	$	121
Cash paid for interest	150		145		209

The beginning and ending cash and cash equivalents and restricted cash reported within our consolidated statement of cash flows included restricted cash amounts as follows (amounts in millions):

	At December 31,
	2018		2017		2016
Beginning restricted cash	$	7	$	17	$	3,569
Ending restricted cash	4		7		17