Discontinued Operations (Schedule Of Operating Results Of Discontinued Operations) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating results of discontinued operations
Revenue		$ 198	$ 258	$ 1,225
Cost of services rendered and products sold		93	110	630
Operating expenses	[1]	56	58	343
Interest and net investment income			(1)	(1)
Income before income taxes		50	91	252
Provision for income taxes		12	22	66
Gain on sale, net of income taxes		(494)
Net earnings from discontinued operations		531	$ 69	186
Spin-off [Member]
Operating results of discontinued operations
Professional fees and other costs incurred				$ 35
ServiceMaster Brands [Member]
Operating results of discontinued operations
Professional fees and other costs incurred		$ 18

[1] Includes $18 million of professional fees and other costs incurred in connection with the strategic evaluation and ultimate sale of the ServiceMaster Brands Divestiture Group in the year ended December 31, 2020, and Frontdoor spin-off related transaction costs of $35 million for the year ended December 31, 2018.