Discontinued Operations (Schedule Of Operating Results Of Discontinued Operations) (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Operating results of discontinued operations
Revenue		$ 63	$ 66	$ 128	$ 128
Cost of services rendered and products sold		31	27	60	52
Selling and administrative expenses		10	12	22	26
Amortization expense			1	1	2
Restructuring and other charges	[1]	5	1	9	2
Income before income taxes		18	24	35	47
Provision for income taxes		5	7	9	12
Net earnings from discontinued operations		13	$ 17	26	$ 34
Professional fees and other costs incurred		$ 5		$ 9

[1] Includes $5 million and $9 million of professional fees and other costs incurred in connection with the strategic evaluation in the three and six months ended June 30, 2020, respectively.