Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Schedule of Repurchase Agreements (Details)

v3.19.3
Stockholders' Equity - Schedule of Repurchase Agreements (Details) - USD ($)
shares in Millions, $ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Shares Repurchase Activity [Line Items]          
Amount $ 464 $ 334 $ 1,966 $ 651  
Treasury stock value $ 7   $ 7   $ 0
Open Market          
Shares Repurchase Activity [Line Items]          
Shares (in shares)     335 104  
Amount     $ 1,966 $ 651