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Goodwill And Acquisition-Related Intangibles, Net (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Finite-Lived Intangible Assets      
Impairment of intangible assets (excluding goodwill) $ 0 $ 18 $ 0
Operating expenses      
Finite-Lived Intangible Assets      
Impairment of intangible assets (excluding goodwill)   6  
Revenue Cost      
Finite-Lived Intangible Assets      
Impairment of intangible assets (excluding goodwill)   $ 12  
Minimum      
Finite-Lived Intangible Assets      
Finite-lived intangible asset, useful life 2 years   2 years
Acquired finite-lived intangible assets, weighted average useful life     4 years 6 months
Maximum      
Finite-Lived Intangible Assets      
Finite-lived intangible asset, useful life 7 years   7 years
Acquired finite-lived intangible assets, weighted average useful life     4 years 9 months 18 days