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Debt and Credit Agreements (Tables)
9 Months Ended
Sep. 30, 2020
Debt Disclosure [Abstract]  
Schedule of Activity Related to Long-Term Debt
Total activity related to long-term debt as of the end of third quarter 2020 is shown in the table below. For fair value information related to the Company's long-term debt, see Note 10, Fair Value Measurements.
(Dollars in millions)Current PortionLong-term PortionTotal
Long-term debt as of December 31, 2019$245 $15,993 $16,238 
2020 activity:
Long-term debt issued— 500 500 
Long-term debt repaid(245)— (245)
Reclassifications371 (371)— 
Discount, premium and other activity— (1)(1)
Long-term debt as of September 30, 2020$371 $16,121 $16,492