Long-term Debt and Borrowing Facility - Revolving Facility and Letters of Credit Narrative (Details) $ in Millions		1 Months Ended	3 Months Ended
	Jan. 31, 2026 USD ($)	May 31, 2025	Jan. 31, 2026 USD ($)
Revolving Credit Facility | Revolving Credit Facility Expiring August 2030
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 750		$ 750
Line of credit, current borrowing base	482		482
Long-term line of credit	0		0
Line of credit facility, remaining borrowing capacity	$ 473		$ 473
Line of credit facility, unused capacity, commitment fee percentage	0.30%
Line of credit facility, commitment fee percentage	1.25%
Line of credit financial covenant, fixed charge coverage ratio			1.00
Line of credit financial covenant, maximum borrowing amount			$ 70
Line of credit financial covenant, percentage of maximum borrowing amount	0.10		0.10
Revolving Credit Facility | Revolving Credit Facility Expiring August 2030 | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.25%
Revolving Credit Facility | Revolving Credit Facility Expiring August 2030 | Canadian Overnight Repo Rate Average
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.25%
Revolving Credit Facility | Revolving Credit Facility Expiring August 2026
Line of Credit Facility [Line Items]
Basis spread on variable rate		0.10%
Letter of Credit | Revolving Credit Facility Expiring August 2030
Line of Credit Facility [Line Items]
Letters of credit outstanding, amount	$ 9		$ 9