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Long-Term Obligations and Commitments- Maturity of Secured Debt (Details)
$ in Millions
Jan. 31, 2022
USD ($)
Debt Disclosure [Abstract]  
2022 (excluding the six months ended January 31, 2022) $ 0
2023 500
2024 50
2025 5,200
2026 0
Thereafter 1,000
Total future principal payments for long-term debt $ 6,750