Costs Associated with Exit and Restructuring Costs Associated with Exit and Restructuring Amounts in the Balance Sheets (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 15	$ 7	$ 1	$ 1
Accrued liabilities
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	10	7	1
Other long-term liabilities
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 5	$ 0	$ 0