Segment Information - EBITDA Reconciliation to Net Earnings (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Adjusted EBITDA
Adjusted EBITDA	$ 73	$ 71
Amortization of intangibles	(2)	(2)
Depreciation	(13)	(12)
Restructuring costs	0	0
Interest expense	(8)	(9)
Deal related transaction costs	(2)	(4)
Acquisition and divestiture related expenses	0	0
Foreign exchange	0	0
COVID-19 response costs	0	(3)
Non-service pension expense	0	0
Other one-time non-operational events	0	0
Income tax (provision) benefit	(12)	(12)
Net earnings	36	29
ASC
Adjusted EBITDA
Depreciation	(9)	(8)
IMS
Adjusted EBITDA
Depreciation	(4)	(4)
Operating Segments | ASC
Adjusted EBITDA
Adjusted EBITDA	32	54
Operating Segments | IMS
Adjusted EBITDA
Adjusted EBITDA	41	18
Corporate & Eliminations
Adjusted EBITDA
Adjusted EBITDA	$ 0	$ (1)