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Employee Retirement Benefits (Tables)
 3 Months Ended
Mar. 31, 2018
Compensation and Retirement Disclosure [Abstract]  
Schedule of Retirement Plan expenses [Table Text Block]
The Company's net periodic benefit costs for all defined benefit plans for the three month periods ended March 31, 2018 and 2017 were as follows:
 
U.S. Plans
 
Non-U.S. Plans
 
2018

2017
 
2018

2017
 
(Dollars in Millions)
Costs Recognized in Income:
 
 
 
 
 
 
 
Pension service cost:
 
 
 
 
 
 
 
Service cost
$
—

 
$
—

 
$
—

 
$
—

Pension financing benefit (cost):
 
 
 
 
 
 
 
Interest cost
(7
)
 
(7
)
 
(2
)
 
(2
)
Expected return on plan assets
10

 
10

 
2

 
2

Amortization of losses and other
—

 
—

 
—

 
—

Restructuring related pension cost:
 
 
 
 
 
 
 
Special termination benefits
(1
)
 
—

 
—

 
—

Net pension income (expense)
$
2

 
$
3

 
$
—

 
$
—