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Financing Arrangement (Tables)
 9 Months Ended
Dec. 31, 2022
Debt Instruments [Abstract]  
Schedule of Carrying Values Of Liability and Equity Components of Senior Notes [Table Text Block]
The carrying and fair values of the Senior Notes are as follows (in millions):
  
As of
December 31, 2022
As of
March 31, 2022
Senior Notes:
4.80% Senior Notes due 2026$400 $400 
1.85% Senior Notes due 2031750 750 
2.95% Senior Notes due 2051750 750 
Total principal amount$1,900 $1,900 
Unaccreted discount(6)(6)
Unamortized debt issuance costs(15)(16)
Net carrying value of Senior Notes$1,879 $1,878 
Fair value of Senior Notes (Level 2)$1,477 $1,711 
Interest and Other Income The following table summarizes our interest expense recognized for the three and nine months ended December 31, 2022 and 2021 that is included in interest and other income (expense), net on our Condensed Consolidated Statements of Operations (in millions):
Three Months Ended
December 31,		Nine Months Ended
December 31,
2022202120222021
Amortization of debt issuance costs(1)(1)(2)(2)
Coupon interest expense(13)(13)(41)(41)
Total interest expense$(14)$(14)$(43)$(43)