XML 72 R56.htm IDEA: XBRL DOCUMENT v3.10.0.1
Earnings Per Share - Weighted Average Number of Anti-Dilutive Shares (Details) - shares
shares in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Antidilutive Securities [Line Items]        
Anti-dilutive potential common shares 151 15 177 19
Stock options        
Antidilutive Securities [Line Items]        
Anti-dilutive potential common shares 1 10 9 12
Restricted stock units and awards        
Antidilutive Securities [Line Items]        
Anti-dilutive potential common shares 0 5 18 7
CEC Convertible Notes        
Antidilutive Securities [Line Items]        
Anti-dilutive potential common shares 150 0 150 0