Quarterly report pursuant to Section 13 or 15(d)

Assets And Liabilities Measured At Fair Value (Details)

v3.7.0.1
Assets And Liabilities Measured At Fair Value (Details) - USD ($)
$ in Millions
Jun. 30, 2017
Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash equivalents $ 502 $ 289
Available-for-sale securities 681 489
Financial instrument assets 413 286
Debt 2,183 1,546
Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash equivalents 502 289
Available-for-sale securities 508 489
Financial instrument assets 18 16
Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 173  
Financial instrument assets 395 270
Debt $ 2,183 $ 1,546