Discontinued Operations (Schedule Of Operating Results Of Discontinued Operations) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Operating results of discontinued operations
Revenue		$ 65	$ 63
Cost of services rendered and products sold		29	25
Selling and administrative expenses		13	13
Amortization expense		1	1
Restructuring and other charges	[1]	4	1
Income before income taxes		17	22
Provision for income taxes		5	6
Net earnings from discontinued operations		13	$ 16
Professional fees and other costs incurred		$ 4

[1] Includes $4 million of professional fees and other costs incurred in connection with the strategic evaluation.