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Discontinued operations
12 Months Ended
Dec. 31, 2022
Discontinued Operations and Disposal Groups [Abstract]  
Discontinued operations Discontinued operationsOn March 13, 2020, the company completed the sale of its U.S. Federal business to Science Applications International Corporation for cash of $1.2 billion. Net cash proceeds of the sale was $1,162.9 million (net of working capital adjustments and transaction costs).
The results of the U.S. Federal business discontinued operations were as follows:
Year ended December 31,2020*
Revenue$149.5 
Income
Operations8.4 
Gain on sale1,060.7 
1,069.1 
Income tax provision 0.7 
Income from discontinued operations, net of tax$1,068.4 
* Includes results of operations through the March 13, 2020 closing date.