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Quarterly Data (Unaudited) (Tables)
12 Months Ended
Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]  
Schedule of Quarterly Financial Information

The information presented below reflects all adjustments, which, in the opinion of management, are of a normal and recurring nature necessary to present fairly the results of operations for the quarterly periods presented (dollars in millions, except per share amounts):
 
2017
 
2016
 
First
 
Second
 
Third
 
Fourth
 
First
 
Second
 
Third
 
Fourth
Total net revenue
$
553

 
$
577

 
$
599

 
$
637

 
$
472

 
$
474

 
$
486

 
$
509

Net income
$
145

 
$
193

 
$
147

 
$
129

 
$
153

 
$
133

 
$
139

 
$
127

Earnings per share:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Basic
$
0.48

 
$
0.70

 
$
0.49

 
$
0.48

 
$
0.54

 
$
0.48

 
$
0.51

 
$
0.46

Diluted
$
0.48

 
$
0.70

 
$
0.49

 
$
0.48

 
$
0.53

 
$
0.48

 
$
0.51

 
$
0.46