v3.26.1
Cover Page
 6 Months Ended
Jun. 30, 2026
shares
Cover [Abstract]  
Document Type 10-Q
Document Quarterly Report true
Document Period End Date Jun. 30, 2026
Document Transition Report false
Entity File Number 1-8951
Entity Registrant Name Sekisui House U.S., Inc.
Entity Incorporation, State or Country Code DE
Entity Tax Identification Number 84-0622967
Entity Address, Address Line One 4350 South Monaco Street, Suite 500
Entity Address, City or Town Denver
Entity Address, State or Province CO
Entity Address, Postal Zip Code 80237
City Area Code 303
Local Phone Number 773-1100
Entity Current Reporting Status No
Entity Interactive Data Current Yes
Entity Filer Category Non-accelerated Filer
Entity Small Business false
Entity Emerging Growth Company false
Entity Shell Company false
Entity Common Stock, Shares Outstanding 100
Entity Central Index Key 0000773141
Amendment Flag false
Current Fiscal Year End Date --12-31
Document Fiscal Period Focus Q2
Document Fiscal Year Focus 2026