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Goodwill
3 Months Ended
Jun. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill Goodwill
The following table summarizes the changes in the carrying amount of goodwill, by segment, as of June 30, 2023.

(in millions)GBSGISTotal
Balance as of March 31, 2023, net$539 $— $539 
Balance as of June 30, 2023, net$539 $— $539 
Goodwill, gross5,029 5,066 10,095 
Accumulated impairment losses(4,490)(5,066)(9,556)
Balance as of June 30, 2023, net$539 $— $539