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SUPPLEMENTARY DATA QUARTERLY FINANCIAL DATA - UNAUDITED
 12 Months Ended
Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]  
SUPPLEMENTARY DATA QUARTERLY FINANCIAL DATA - UNAUDITED
SUPPLEMENTARY DATA
QUARTERLY FINANCIAL DATA – UNAUDITED

($ in millions, except per share data)
2019
 
First
Quarter
 
Second
Quarter
 
Third
Quarter
 
Fourth
Quarter
 
Fiscal
Year
Revenues
$
5,012

 
$
5,305

 
$
5,284

 
$
5,371

 
$
20,972

Operating income
$
510

 
$
409

 
$
607

 
$
274

 
$
1,800

Net income
$
375

 
$
232

 
$
387

 
$
279

 
$
1,273

Basic earnings per share (1)
$
1.10

 
$
0.70

 
$
1.17

 
$
0.85

 
$
3.83

Diluted earnings per share (1)
$
1.09

 
$
0.69

 
$
1.16

 
$
0.85

 
$
3.80

 
($ in millions, except per share data)
2018
 
First
Quarter
 
Second
Quarter
 
Third
Quarter
 
Fourth
Quarter
 
Fiscal
Year
Revenues
$
5,009

 
$
5,409

 
$
5,051

 
$
5,289

 
$
20,758

Operating income
$
530

 
$
818

 
$
596

 
$
422

 
$
2,366

Net income
$
420

 
$
667

 
$
503

 
$
317

 
$
1,907

Basic earnings per share (1)
$
1.17

 
$
1.89

 
$
1.45

 
$
0.93

 
$
5.45

Diluted earnings per share (1)
$
1.16

 
$
1.87

 
$
1.43

 
$
0.92

 
$
5.38


(1) 
The sum of the earnings per share for the four quarters may differ from annual earnings per share due to the required method of computing the weighted average shares in interim periods.