Note 2 - Schedule of Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Millions		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash And Cash Equivalents [Abstract]
Cash and cash equivalents		$ 233	$ 233
Restricted cash - current portion		12	8
Restricted cash - long-term		45	11
Cash included in assets held for sale			15
Total cash, cash equivalents, restricted cash and cash in assets held for sale shown in the Statement of Cash Flows	[1]	$ 290	$ 267	$ 369

[1] Refer to Note 2, “Cash, Cash Equivalents and Restricted Cash” for a breakdown of cash, cash equivalents, restricted cash and cash in assets held for sale.