Condensed Consolidated Statements of Operations and Comprehensive Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue	$ 530	$ 512	$ 1,562	$ 1,502
Cost of services rendered and products sold	309	299	897	876
Selling and administrative expenses	142	140	422	423
Amortization expense	10	9	29	26
Acquisition-related costs	1	(1)	0	0
Litigation settlement	0	49	4	49
Fumigation related matters	0	0	1	0
Restructuring and other charges	2	2	10	14
Goodwill impairment	3	0	3	0
Interest expense	11	22	34	67
Interest and net investment income	0	(1)	(2)	(2)
Loss on extinguishment of debt	0	1	0	1
Income (Loss) from Continuing Operations before Income Taxes	52	(7)	162	50
Provision for income taxes	14	15	45	31
Equity in earnings of joint ventures	1	1	2	2
Income (Loss) from Continuing Operations	38	(21)	119	20
Net earnings from discontinued operations	0	14	0	40
Net Income (Loss)	38	(7)	119	61
Total Comprehensive Income (Loss)	$ 35	$ (16)	$ 133	$ 3
Weighted-average common shares outstanding - Basic	124.3	132.0	127.6	132.9
Weighted-average common shares outstanding - Diluted	124.7	132.0	128.1	133.1
Basic Earnings (Loss) Per Share:
Income (Loss) from Continuing Operations (in dollars per share)	$ 0.31	$ (0.17)	$ 0.93	$ 0.14
Net earnings from discontinued operations (in dollars per share)	0	0.11	0	0.30
Net Income (Loss) (in dollars per share)	0.31	(0.06)	0.93	0.44
Diluted Earnings (Loss) Per Share:
Income (Loss) from Continuing Operations (in dollars per share)	0.31	(0.17)	0.93	0.14
Net earnings from discontinued operations (in dollars per share)	0	0.11	0	0.30
Net Income (Loss) (in dollars per share)	$ 0.30	$ (0.06)	$ 0.93	$ 0.44
Fumigation Related Matters [Member]
Litigation settlement			$ 1	$ 0