Annual report pursuant to Section 13 and 15(d)

Assets And Liabilities Measured At Fair Value (Details)

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Assets And Liabilities Measured At Fair Value (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Assets and Liabilities Measured at Fair Value    
Debt and equity securities $ 353 $ 1,195
Estimate of Fair Value Measurement [Member]    
Assets and Liabilities Measured at Fair Value    
Cash equivalents 992 231
Debt and equity securities 353 1,195
Financial instrument assets 498 280
Debt 3,678 2,487
Level 1    
Assets and Liabilities Measured at Fair Value    
Cash equivalents 992 231
Debt and equity securities 242 228
Financial instrument assets 29 21
Level 2    
Assets and Liabilities Measured at Fair Value    
Debt and equity securities 111 967
Financial instrument assets 469 259
Debt $ 3,678 $ 2,487