Note 2 - Cash, Cash Equivalents and Restricted Cash (Tables)

6 Months Ended

Jun. 30, 2018

Cash And Cash Equivalents [Abstract]

Schedule of Reconciliation of Cash, Cash Equivalents and Restricted Cash [Text Block]

The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the Statement of Financial Position that sums to the total of such amounts shown in the Statement of Cash Flows:

	June 30,		December 31,
(in millions)	2018		2017
Cash and cash equivalents	$	275	$	344
Restricted cash included in Other current assets		7		8
Long-term restricted cash		11		17
Total cash, cash equivalents and restricted cash shown in the Statement of Cash Flows	$	293	$	369