Annual report pursuant to Section 13 and 15(d)

Shareholders' Equity - Accounting for Share-based Compensation (Details)

v3.8.0.1
Shareholders' Equity - Accounting for Share-based Compensation (Details)
$ in Millions
12 Months Ended
Dec. 31, 2017
USD ($)
Equity [Abstract]  
Share-based payment award tax benefit $ (236)