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

3 Months Ended

Mar. 31, 2017

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:

	March 31,		December 31,
(in millions)	2017		2016
Cash and cash equivalents	$	378	$	434
Restricted cash included in Other current assets		8		8
Restricted cash		36		36
Total cash, cash equivalents and restricted cash shown in the Statement of Cash Flows	$	422	$	478