Other (Income) Expense (Details) - Continuing Operations [Member] - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other Income and Expenses [Line Items]
Foreign currency transaction (gain) loss and other (income) expense, before tax		$ 1	$ 5	$ (6)
Loss associated with corporate aircraft	[1]	0	2	9
Closures and impairment (income) expenses		6	3	15
Other (income) expense		$ 7	$ 10	$ 18

[1] During 2016, we made the decision to no longer operate a corporate aircraft fleet and offered our owned aircraft for sale, one of which was sold during 2016 and one that was sold in 2017. The losses associated with these sales reflect the shortfall of the proceeds, including estimated proceeds in held-for-sale impairment evaluations, less any selling costs, over the carrying value of the aircraft.