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Fair Value - Other Fair Value Disclosures (Details) - USD ($)
$ in Millions
9 Months Ended
Dec. 31, 2021
Mar. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt, net of current maturities $ 4,236 $ 4,345
Goodwill impairment 0  
Tangible asset impairment charges 0  
Impairment of intangible assets 0  
Impairment of other intangible assets 0  
Fair value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt, net of current maturities 4,000 4,700
Carrying value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt, net of current maturities $ 4,000 $ 4,400