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Equity (Tables)
12 Months Ended
Dec. 31, 2024
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss) A summary of the changes in each component of Accumulated other comprehensive loss, net of tax is provided below:
(dollars in millions)Foreign Currency TranslationDefined Benefit Pension and Postretirement PlansUnrealized Hedging (Losses) GainsAccumulated Other Comprehensive Loss
Balance at December 31, 2021$49 $(1,828)$(136)$(1,915)
Other comprehensive income (loss) before reclassifications, net(1,050)1,225 (246)(71)
Amounts reclassified, pre-tax129 103 234 
Tax benefit (expense)(6)(308)48 (266)
Balance at December 31, 2022$(1,005)$(782)$(231)$(2,018)
Other comprehensive income (loss) before reclassifications, net562 (1,041)278 (201)
Amounts reclassified, pre-tax— (568)80 (488)
Tax benefit (expense)365 (80)288 
Balance at December 31, 2023$(440)$(2,026)$47 $(2,419)
Other comprehensive income (loss) before reclassifications, net(506)(674)(291)(1,471)
Amounts reclassified, pre-tax (173)63 (110)
Tax benefit (expense)(3)194 54 245 
Balance at December 31, 2024$(949)$(2,679)$(127)$(3,755)