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

12 Months Ended

Dec. 31, 2020

Cash And Cash Equivalents [Abstract]

Schedule of Reconciliation of Cash, Cash Equivalents and Restricted Cash

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:

	As of December 31,
(in millions)	2020		2019
Cash and cash equivalents	$	196	$	233
Restricted cash - current portion		7		12
Restricted cash		53		45
Total cash, cash equivalents and restricted cash shown in the    Statement of Cash Flows	$	256	$	290