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
Mar. 31, 2017
Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash equivalents $ 631 $ 289
Available-for-sale securities 518 489
Financial instrument assets 370 286
Debt 2,107 1,546
Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash equivalents 631 289
Available-for-sale securities 518 489
Financial instrument assets 16 16
Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financial instrument assets 354 270
Debt $ 2,107 $ 1,546