CASH, CASH EQUIVALENTS AND RESTRICTED CASH (Tables)

6 Months Ended

Jun. 30, 2019

Cash And Cash Equivalents [Abstract]

Reconciliation of Cash, Cash Equivalents, and Restricted Cash

The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the Balance Sheets that sum to the totals of such amounts shown in our Statements of Cash Flows as of June 30, 2019 and December 31, 2018:  

	June 30, 2019		December 31, 2018
	(In millions)
Cash and cash equivalents	$	455	$	520
Restricted cash and cash equivalents (1)		327		325
Total cash, cash equivalents and restricted cash shown in the Statements of Cash Flows	$	782	$	845

^{(1) Our restricted cash balances primarily serve as cash collateral deposits for our letter of credit facilities. See Note 12, Debt, for further discussion.}