Document and Entity Information Document	9 Months Ended
	Sep. 30, 2025 shares
Document Information [Line Items]
Entity Registrant Name	SERVICE CORPORATION INTERNATIONAL
Entity Central Index Key	0000089089
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q3
Entity Shell Company	false
Amendment Flag	false
Entity Common Stock, Shares Outstanding	140,246,179
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Current Reporting Status	Yes