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Consolidated Statements of Comprehensive Income - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Statement of Comprehensive Income [Abstract]      
Net earnings $ 405 $ 154 $ 85
Other comprehensive income      
Foreign currency translation (loss) gain, net of income taxes (2) 2 1
Net unrecognized gain on postretirement obligations, net of income taxes 11 10 22
Other comprehensive income, net of income tax 9 12 23
Total comprehensive income $ 414 $ 166 $ 108