Short-term Borrowings and Other Debt Obligations (Tables)

12 Months Ended

Dec. 31, 2017

Line of Credit Facility [Line Items]

Schedule of Line of Credit Facilities [Table Text Block]

(Dollars in millions)	December 31, 2017
Facilities	$	1,375
Less Uses of Facilities:
Letters of Credit	110
Secured Term Loan Principal Borrowing	375
Borrowing Availability	$	890

Components of short-term borrowings

Our short-term borrowings and current portion of long-term debt consists of the followings:

	December 31,
(Dollars in millions)	2017		2016
Other Short-term Loans	$	11	$	2
Current Portion of Long-term Debt	137		177
Short-term Borrowings and Current Portion of Long-term Debt	$	148	$	179