Borrowings - Long-Term Debt (Details) $ in Millions		12 Months Ended
		Oct. 31, 2024 USD ($) tranche	Oct. 31, 2023 USD ($) tranche	Oct. 31, 2022 USD ($)
Long-term debt
Fair value adjustment related to hedged debt		$ (58)	$ (151)
Unamortized debt issuance costs		(76)	(30)
Less: current portion		(3,969)	(4,022)
Total long-term debt		$ 13,504	$ 7,487
Weighted average interest rate (as a percent)		7.60%	4.80%
Interest expense on borrowings recognized in Combined Statements of Earnings
Financing cost		$ 495	$ 383	$ 211
Interest expense		282	326	260
Total interest expense		777	709	$ 471
Asset-backed Securities | $818 issued in June 2024, in six tranches at a weighted average price of 99.99% and a weighted average interest rate of 5.59%, payable monthly from July 2024
Long-term debt
Secured debt		700	0
Face amount of debt instrument		$ 818
Discount to par (as a percent)		99.99%
Number of tranches | tranche		6
Weighted average interest rate (as a percent)		5.59%
Asset-backed Securities | $796 issued in January 2024, in six tranches at a weighted average price of 99.99% and a weighted average interest rate of 5.48%, payable monthly from February 2024
Long-term debt
Secured debt		$ 583	0
Face amount of debt instrument		$ 796
Discount to par (as a percent)		99.99%
Number of tranches | tranche		6
Weighted average interest rate (as a percent)		5.48%
Asset-backed Securities | $612 issued in September 2023, in six tranches at a weighted average price of 99.99% and a weighted average interest rate of 6.40%, payable monthly from October 2023 with a stated final maturity of July 2031
Long-term debt
Secured debt		$ 373	596
Face amount of debt instrument		$ 612	$ 612
Discount to par (as a percent)		99.99%	99.99%
Number of tranches | tranche		6	6
Weighted average interest rate (as a percent)		6.40%	6.40%
Asset-backed Securities | $643 issued in March 2023 and April 2023, in five tranches at a weighted average price of 99.99% and a weighted average interest rate of 5.59%, payable monthly from April 2023 with a stated final maturity of April 2028
Long-term debt
Secured debt		$ 257	$ 483
Face amount of debt instrument		$ 643	$ 643
Discount to par (as a percent)		99.99%	99.99%
Number of tranches | tranche		5	5
Weighted average interest rate (as a percent)		5.59%	5.59%
Asset-backed Securities | $651 issued in October 2022, in five tranches at a weighted average price of 99.99% and a weighted average interest rate of 5.55%, payable monthly from November 2022 with a stated final maturity date of August 2029
Long-term debt
Secured debt		$ 191	$ 393
Face amount of debt instrument		$ 651	$ 651
Discount to par (as a percent)		99.99%	99.99%
Number of tranches | tranche		5	5
Weighted average interest rate (as a percent)		5.55%	5.55%
Asset-backed Securities | $747 issued in May 2022, in six tranches at a weighted average price of 99.99% and a weighted average interest rate of 3.68%, payable monthly from July 2022 with a stated final maturity date of March 2030
Long-term debt
Secured debt		$ 148	$ 367
Face amount of debt instrument		$ 747	$ 747
Discount to par (as a percent)		99.99%	99.99%
Number of tranches | tranche		6	6
Weighted average interest rate (as a percent)		3.68%	3.68%
Asset-backed Securities | $1,000 issued in January 2022, in six tranches at a weighted average price of 99.99% and a weighted average interest rate of 1.51%, payable monthly from March 2022 with a stated final maturity date of November 2029
Long-term debt
Secured debt		$ 124	$ 391
Face amount of debt instrument		$ 1,000	$ 1,000
Discount to par (as a percent)		99.99%	99.99%
Number of tranches | tranche		6	6
Weighted average interest rate (as a percent)		1.51%	1.51%
Asset-backed Securities | $753 issued in June 2021, in six tranches at a weighted average price of 99.99% and a weighted average interest rate of 0.58%, payable monthly from August 2021 with a stated final maturity date of March 2029
Long-term debt
Secured debt		$ 26	$ 147
Face amount of debt instrument		$ 753	$ 753
Discount to par (as a percent)		99.99%	99.99%
Number of tranches | tranche		6	6
Weighted average interest rate (as a percent)		0.58%	0.58%
Asset-backed Securities | $1,000 issued in March 2021, in six tranches at a weighted average price of 99.99% and a weighted average interest rate of 0.49%, payable monthly from April 2021 with a stated final maturity date of March 2031
Long-term debt
Secured debt		$ 0	$ 102
Face amount of debt instrument		$ 1,000	$ 1,000
Discount to par (as a percent)		99.99%	99.99%
Number of tranches | tranche		6	6
Weighted average interest rate (as a percent)		0.49%	0.49%
Senior Notes | $1,250 issued at discount to par at a price of 99.996% in September 2024 at 4.45%, due September 25, 2026, interest payable semi-annually on March 25 and September 25 of each year
Long-term debt
Unsecured notes		$ 1,250	$ 0
Face amount of debt instrument		$ 1,250
Discount to par (as a percent)		99.996%
Interest rate		4.45%
Senior Notes | $1,250 issued at discount to par at a price of 99.953% in September 2024 at 4.40%, due September 25, 2027, interest payable semi-annually on March 25 and September 25 of each year
Long-term debt
Unsecured notes		$ 1,249	0
Face amount of debt instrument		$ 1,250
Discount to par (as a percent)		99.953%
Interest rate		4.40%
Senior Notes | $1,750 issued at discount to par at a price of 99.894% in September 2024 at 4.55%, due October 15, 2029, interest payable semi-annually on April 15 and October 15 of each year
Long-term debt
Unsecured notes		$ 1,748	0
Face amount of debt instrument		$ 1,750
Discount to par (as a percent)		99.894%
Interest rate		4.55%
Senior Notes | $1,250 issued at discount to par at a price of 99.908% in September 2024 at 4.85%, due October 15, 2031, interest payable semi-annually on April 15 and October 15 of each year
Long-term debt
Unsecured notes		$ 1,249	0
Face amount of debt instrument		$ 1,250
Discount to par (as a percent)		99.908%
Interest rate		4.85%
Senior Notes | $2,000 issued at discount to par at a price of 99.078% in September 2024 at 5.00%, due October 15, 2034, interest payable semi-annually on April 15 and October 15 of each year
Long-term debt
Unsecured notes		$ 1,982	0
Face amount of debt instrument		$ 2,000
Discount to par (as a percent)		99.078%
Interest rate		5.00%
Senior Notes | $1,500 issued at discount to par at a price of 98.086% in September 2024 at 5.60%, due October 15, 2054, interest payable semi-annually on April 15 and October 15 of each year
Long-term debt
Unsecured notes		$ 1,471	0
Face amount of debt instrument		$ 1,500
Discount to par (as a percent)		98.086%
Interest rate		5.60%
Senior Notes | $250 issued at premium to par at a price of 100.452% in June 2023 at 5.90%, due October 1, 2024, interest payable semi-annually on April 1 and October 1 of each year
Long-term debt
Unsecured notes		$ 0	251
Face amount of debt instrument		$ 250	$ 250
Discount to par (as a percent)		100.452%	100.452%
Interest rate		5.90%	5.90%
Senior Notes | $550 issued at discount to par at a price of 99.887% in June 2023 at 5.25%, due July 1, 2028, interest payable semi-annually on January 1 and July 1 of each year
Long-term debt
Unsecured notes		$ 550	$ 549
Face amount of debt instrument		$ 550	$ 550
Discount to par (as a percent)		99.887%	99.887%
Interest rate		5.25%	5.25%
Senior Notes | $400 issued at discount to par at a price of 99.997% in March 2023 at 6.102%, due April 1, 2026, interest payable semi-annually on April 1 and October 1 of each year
Long-term debt
Unsecured notes		$ 0	$ 400
Face amount of debt instrument		$ 400	$ 400
Discount to par (as a percent)		99.997%	99.997%
Interest rate		6.102%	6.102%
Senior Notes | $1,300 issued at discount to par at a price of 99.934% in March 2023 at 5.90%, due October 1, 2024, interest payable semi-annually on April 1 and October 1 of each year
Long-term debt
Unsecured notes		$ 0	$ 1,299
Face amount of debt instrument		$ 1,300	$ 1,300
Discount to par (as a percent)		99.934%	99.934%
Interest rate		5.90%	5.90%
Senior Notes | $1,000 issued at discount to par at a price of 99.883% in July 2020 at 1.45%, due April 1, 2024, interest payable semi-annually on April 1 and October 1 of each year
Long-term debt
Unsecured notes		$ 0	$ 1,000
Face amount of debt instrument		$ 1,000	$ 1,000
Discount to par (as a percent)		99.883%	99.883%
Interest rate		1.45%	1.45%
Senior Notes | $750 issued at discount to par at a price of 99.820% in July 2020 at 1.75%, due April 1, 2026, interest payable semi-annually on April 1 and October 1 of each year
Long-term debt
Unsecured notes		$ 750	$ 749
Face amount of debt instrument		$ 750	$ 750
Discount to par (as a percent)		99.82%	99.82%
Interest rate		1.75%	1.75%
Senior Notes | $2,500 issued at discount to par at a price of 99.725% in October 2015 at 4.90%, due October 15, 2025, interest payable semi-annually on April 15 and October 15 of each year
Long-term debt
Unsecured notes		$ 2,499	$ 2,499
Face amount of debt instrument		$ 2,500	$ 2,500
Discount to par (as a percent)		99.725%	99.725%
Interest rate		4.90%	4.90%
Senior Notes | $750 issued at discount to par at a price of 99.942% in October 2015 at 6.20%, due October 15, 2035, interest payable semi-annually on April 15 and October 15 of each year
Long-term debt
Unsecured notes		$ 750	$ 750
Face amount of debt instrument		$ 750	$ 750
Discount to par (as a percent)		99.942%	99.942%
Interest rate		6.20%	6.20%
Senior Notes | $1,500 issued at discount to par at a price of 99.932% in October 2015 at 6.35%, due October 15, 2045, interest payable semi-annually on April 15 and October 15 of each year
Long-term debt
Unsecured notes		$ 1,499	$ 1,499
Face amount of debt instrument		$ 1,500	$ 1,500
Discount to par (as a percent)		99.932%	99.932%
Interest rate		6.35%	6.35%
Other, including capital lease obligations, at 1.1%-9.0%, due in calendar years 2021-2030
Long-term debt
Other, including capital lease obligations, at 1.1%-9.0%, due in calendar years 2021-2030	[1]	$ 208	$ 215
Other, including capital lease obligations, at 1.1%-9.0%, due in calendar years 2021-2030 | Financial Services
Long-term debt
Other, including capital lease obligations		$ 14	$ 36
Other, including capital lease obligations, at 1.1%-9.0%, due in calendar years 2021-2030 | Minimum
Long-term debt
Interest rate		1.60%	1.60%
Other, including capital lease obligations, at 1.1%-9.0%, due in calendar years 2021-2030 | Maximum
Long-term debt
Interest rate		6.30%	6.30%

[1] Other, including finance lease obligations included $14 million and $36 million as of October 31, 2024 and 2023, respectively, of borrowing- and funding-related activity associated with FS and its subsidiaries that are collateralized by receivables and underlying assets associated with the related finance and operating leases. For both the periods presented, the carrying amount of the assets approximated the carrying amount of the borrowings.