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Fair Value Measurements (Details) - Interest Rate Swap |  | 9 Months Ended |
--- | --- | --- | ---
Apr. 06, 2020 USD ($) interest_rate_swap_contract | Jul. 31, 2021 | Oct. 31, 2021 USD ($) interest_rate_swap_contract
Derivative [Line Items] |  |  |
Number of interest rate swap contracts held | 6 |  |
Derivative, term of contract (or less) | 7 years | 6 years |
Number of interest rate swap contracts matured |  |  | 3
Derivative notional amount | $ | $ 1,500,000,000 |  | $ 1,000,000,000

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