XML 53 R42.htm IDEA: XBRL DOCUMENT v3.19.1
Earnings Per Share (Anti-Dilutive Equity Instruments Excluded From The Computation Of Diluted Earnings Per Share) (Details) - shares
shares in Millions
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Earnings Per Share [Abstract]    
Anti-dilutive equity instruments excluded from the computation of diluted earnings per share (in shares) 2.8 1.4