XML 103 R88.htm IDEA: XBRL DOCUMENT v3.6.0.2
Marketable Securities - Schedule of Marketable Securities (Details) - USD ($)
$ in Millions
Dec. 31, 2016
Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]    
Cost $ 30 $ 160
Unrealized Gains (Losses) 0 2
Fair Value 30 162
US Treasury and Government [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Cost 2 38
Unrealized Gains (Losses) 0 0
Fair Value 2 38
Corporate Securities [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Cost 2 42
Unrealized Gains (Losses)
Fair Value 2 42
Certificates of Deposit [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Cost 22 18
Unrealized Gains (Losses)  
Fair Value 22 18
Other Securities [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Cost 4 62
Unrealized Gains (Losses) 2
Fair Value $ 4 $ 64