Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Net sales	$ 4,575	$ 4,339	$ 3,976
Eliminations
Disaggregation of Revenue [Line Items]
Net sales	(111)	(89)	(47)
Eliminations
Disaggregation of Revenue [Line Items]
Net sales	(17)	(11)	(12)
North America
Disaggregation of Revenue [Line Items]
Net sales	2,719	2,377	2,111
North America | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	2,719	2,377	2,111
North America | Eliminations
Disaggregation of Revenue [Line Items]
Net sales	(93)	(76)	(33)
Europe
Disaggregation of Revenue [Line Items]
Net sales	1,412	1,571	1,509
Europe | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,412	1,571	1,509
Europe | Eliminations
Disaggregation of Revenue [Line Items]
Net sales	(18)	(13)	(14)
APAC & Emerging Markets
Disaggregation of Revenue [Line Items]
Net sales	461	402	368
APAC & Emerging Markets | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	461	402	368
APAC & Emerging Markets | Eliminations
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
Supply Chain Services | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	4,084	3,926	3,678
Supply Chain Services | Eliminations
Disaggregation of Revenue [Line Items]
Net sales	(17)	(11)	(12)
Supply Chain Services | North America | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	2,230	1,969	1,816
Supply Chain Services | Europe | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,419	1,574	1,513
Supply Chain Services | APAC & Emerging Markets | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	452	394	361
Software Services | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	99	96	99
Software Services | Eliminations
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
Software Services | North America | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	79	78	82
Software Services | Europe | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	11	10	10
Software Services | APAC & Emerging Markets | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	9	8	7
Prescription Management | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	503	406	246
Prescription Management | Eliminations
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
Prescription Management | North America | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	503	406	246
Prescription Management | Europe | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
Prescription Management | APAC & Emerging Markets | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	$ 0	$ 0	$ 0