Business Segment Reporting (Schedule Of Information For Continuing Operations For Each Reportable Segment And Other Operations And Headquarters) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Revenue		$ 2,077	$ 1,900	$ 1,755
Reportable Segment Adjusted EBITDA		410	422	417
Total assets		5,322	5,023
Depreciation and amortization expense	[1]	104	91	86
Capital Expenditures		28	49	68
Continuing Operations [Member]
Segment Reporting Information [Line Items]
Total assets		5,322	5,023	4,228
Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue		2,055	1,899	1,754
Reportable Segment Adjusted EBITDA	[2]	410	422	417
Total assets		4,042	3,653	3,310
Depreciation and amortization expense		81	67	65
Capital Expenditures		21	14	15
Terminix [Member]
Segment Reporting Information [Line Items]
Revenue		1,798	1,655	1,541
Terminix [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue		1,798	1,655	1,541
Reportable Segment Adjusted EBITDA	[2]	319	333	330
Total assets		3,534	3,162	2,821
Depreciation and amortization expense		73	59	58
Capital Expenditures		17	12	12
ServiceMaster Brands [Member]
Segment Reporting Information [Line Items]
Revenue		257	244	212
ServiceMaster Brands [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue		257	244	212
Reportable Segment Adjusted EBITDA	[2]	92	89	87
Total assets		508	491	489
Depreciation and amortization expense		8	8	7
Capital Expenditures		4	2	2
Corporate And Other Operations [Member]
Segment Reporting Information [Line Items]
Revenue		22	1	2
Total assets		1,280	1,370	917
Depreciation and amortization expense		23	24	21
Capital Expenditures		$ 7	$ 34	$ 53

[1] There are no adjustments necessary to reconcile total depreciation and amortization as presented in the business segment table to consolidated totals. Amortization of debt issue costs is not included in the business segment table. See Note 5 to the consolidated financial statements for information relating to segment goodwill.

[2] Presented below is a reconciliation of Net Income (Loss) to Reportable Segment Adjusted EBITDA