Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share (Stock Repurchase Activity) (Details)

v3.10.0.1
Earnings Per Share (Stock Repurchase Activity) (Details)
$ / shares in Units, $ in Millions
4 Months Ended
Sep. 30, 2018
USD ($)
$ / shares
shares
Shares  
Treasury stock, beginning (in shares) | shares 0
Treasury stock, acquired (in shares) | shares 1,000,000
Treasury stock, ending (in shares) | shares 1,023,472
Cost  
Treasury stock, cost, beginning | $ $ 0
Treasury stock, cost, acquired | $ 59
Treasury stock, cost, ending | $ $ 59
Average Price Per Share  
Treasury stock, average price per share, beginning (in usd per share) | $ / shares $ 0.00
Treasury stock, average price per share, acquired (in usd per share) | $ / shares 57.84
Treasury stock, average price per share, ending (in usd per share) | $ / shares $ 57.84