XML 33 R22.htm IDEA: XBRL DOCUMENT v3.10.0.1
EMPLOYEE BENEFIT PLANS (Tables)
 9 Months Ended
Sep. 30, 2018
Retirement Benefits [Abstract]  
Schedule of Net Benefit Costs
Net periodic benefit costs for qualified defined-benefit plans include the following (in millions): 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2018
 
2017
 
2018
 
2017
Service cost
$
12

 
$
10

 
$
36

 
$
30

Pension expense included in Wages and benefits
12

 
10

 
36

 
30

 
 
 
 
 
 
 
 
Interest cost
20

 
19

 
59

 
55

Expected return on assets
(27
)
 
(27
)
 
(80
)
 
(80
)
Amortization of prior service cost (credit)
(1
)
 
(1
)
 
(1
)
 
(1
)
Recognized actuarial loss (gain)
9

 
7

 
25

 
20

Pension expense (benefit) included in Nonoperating Income (Expense)
$
1

 
$
(2
)
 
$
3

 
$
(6
)