Business Segment Reporting (Schedule Of Reconciliation Of Net Income (Loss) To Reportable Segment Adjusted EBITDA) (Details) - USD ($) $ in Millions				12 Months Ended
		Nov. 05, 2019	Mar. 27, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of Reportable Segment Adjusted EBITDA to Net Income (Loss)
Net Income				$ 128	$ (41)	$ 510
Termite damage claims reserve adjustment				53
Depreciation and amortization expense	[1]			104	91	86
Acquisition-related costs				17	5
401(k) Plan corrective contribution						(3)
Fumigation related matters					3	4
Non-cash stock-based compensation expense				15	14	10
Restructuring and other charges				17	17	21
(Gain) loss on investment in frontdoor, inc.			$ (40)	(40)	249
Non-cash impairment of software and other related costs				0	0	2
Loss (gain) from discontinued operations, net of income taxes				1	(122)	(169)
Provision (benefit) for income taxes				27	37	(242)
Loss on extinguishment of debt		$ (1)		8	10	6
Interest expense				87	133	150
Reportable Segment Adjusted EBITDA				410	422	417
Corporate And Other Operations [Member]
Reconciliation of Reportable Segment Adjusted EBITDA to Net Income (Loss)
Net Income				(6)	(9)	(1)
Depreciation and amortization expense				23	24	21
American Home Shield [Member]
Reconciliation of Reportable Segment Adjusted EBITDA to Net Income (Loss)
Costs historically allocated to American Home Shield					$ 33	$ 44
European Pest Control [Member]
Reconciliation of Reportable Segment Adjusted EBITDA to Net Income (Loss)
Costs historically allocated to American Home Shield				$ (1)

[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.