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Contract Assets and Liabilities (Tables)
9 Months Ended
Sep. 30, 2023
Revenue from Contract with Customer [Abstract]  
Contract with Customer, Asset and Liability Total contract assets and contract liabilities were as follows:
(dollars in millions)September 30, 2023December 31, 2022
Contract assets$12,696 $11,534 
Contract liabilities(15,248)(14,598)
Net contract liabilities$(2,552)$(3,064)