Quarterly report pursuant to Section 13 or 15(d)

Share Repurchase Program (Details)

v3.19.3
Share Repurchase Program (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2019
Sep. 30, 2018
Equity [Abstract]      
Stock Repurchase Program, Period in Force   3 years  
Stock Repurchase Program, Authorized Amount $ 1,000 $ 1,000  
Treasury Stock, Shares, Acquired 2.5 2.5  
Payments for Repurchase of Common Stock $ 156 $ 159 $ 0
Treasury Stock Acquired, Average Cost Per Share $ 62.99 $ 63.09  
Stock Repurchase Program, Remaining Authorized Repurchase Amount $ 841 $ 841