v3.20.2
Fair Value Measurements And Disclosure (Narrative) (Details)
€ in Millions, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2020
USD ($)
Jun. 30, 2020
USD ($)
Jun. 30, 2020
EUR (€)
Jun. 30, 2020
USD ($)
Dec. 31, 2019
USD ($)
Fair Value Disclosures [Line Items]          
Collateral received from counterparty       $ 16 $ 44
Collateral submitted to counterparty       694 204
Collateral contingently payable to the counterparty         76
Available-for-sale Securities Debt Securities       1,522 $ 1,444
Fixed income investments - maturities less than 1 year       64  
Fixed income investments - maturities within 1 to 3 years       175  
Fixed income investments - maturities within 3 to 5 years       156  
Fixed income investments - maturities for 5 or more years       1,127  
Anticipated reclassification of holding losses during the next 12 months - cash flow hedges       98  
Net gains (losses) on net investment hedges recognized in accumulated OCI $ (30) $ (5)      
Interest Rate Locks [Member]          
Fair Value Disclosures [Line Items]          
Payments for Hedge, Financing Activities $ 731        
Measurement Input, Entity Credit Risk [Member]          
Fair Value Disclosures [Line Items]          
Collateral contingently payable to the counterparty       5,487  
Net Investment Hedge [Member]          
Fair Value Disclosures [Line Items]          
Debt Instrument, Face Amount | €     € 1,450    
DIRECTV [Member]          
Fair Value Disclosures [Line Items]          
Collateral contingently payable to the counterparty       $ 321