Note 11 - Schedule of Information Related to Lease Expense for Finance and Operating Leases (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)
Finance lease expense
Amortization of leased assets	$ 3
Operating lease expense	25
Variable lease expense	10	[1]
Total lease expense	$ 38

[1] Variable lease expense is related to real estate leases and primarily includes taxes, insurance and operating costs.