Restructuring And Other Charges (Schedule Of Restructuring Charges) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges		$ 4	$ 6
Stock-based compensation expense		4	4
Terminix
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	[1]	1	2
Severance and other restructuring costs		1	2
Unpaid and accrued costs		1
European Pest Control And Other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	[2]	3	4
Corporate And Other Operations [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs		2	1
Other costs		1	$ 3
Unpaid and accrued costs		$ 3

[1] For the three months ended March 31, 2020 and 2019, these charges included $1 million and $2 million, respectively, of severance and other costs. Of this amount, $1 million was unpaid and accrued as of March 31, 2020.

[2] We have historically made changes on an ongoing basis to enhance capabilities and reduce costs in our corporate functions that provide company-wide administrative services to support operations. For the three months ended March 31, 2020 and 2019, these charges included $2 million and $1 million, respectively, of severance and other costs, including accelerated depreciation on systems we are replacing with the implementation of our new customer experience platform, and $1 million and $3 million, respectively, of other costs to enhance capabilities and align corporate functions with those required to support our strategic needs as a pure play pest control company after the potential sale of the ServiceMaster Brands business and after the American Home Shield spin-off, respectively. Of this amount, $3 million was unpaid and accrued as of March 31, 2020.