Document and Entity Information Document - USD ($)	12 Months Ended
	Oct. 31, 2021	Dec. 14, 2021	Apr. 30, 2021
Cover page [Abstract]
Amendment Flag	false
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2021
Document Type	10-K
Current Fiscal Year End Date	--10-31
Entity Central Index Key	0000794170
ICFR Auditor Attestation Flag	true
Entity Common Stock, Shares Outstanding		120,360,000
Entity Public Float			$ 7,177,356,000
Entity Shell Company	false
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Filer Category	Large Accelerated Filer
Entity Interactive Data Current	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	Yes
Security Exchange Name	NYSE
Trading Symbol	TOL
Title of 12(b) Security	Common Stock (par value $.01)
Local Phone Number	938-8000
City Area Code	215
Entity Address, Postal Zip Code	19034
Entity Address, State or Province	PA
Entity Address, City or Town	Fort Washington
Entity Address, Address Line One	1140 Virginia Drive
Entity Tax Identification Number	23-2416878
Entity Incorporation, State or Country Code	DE
Entity Registrant Name	TOLL BROTHERS, INC.
Entity File Number	001-09186
Document Transition Report	false
Document Period End Date	Oct. 31, 2021
Document Annual Report	true