Segment Data (Business Segment Information) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 26, 2026	Sep. 27, 2025	Sep. 26, 2026	Sep. 27, 2025
Segment Reporting Information [Line Items]
Net sales	$ 3,471	$ 3,339	$ 10,297	$ 9,747
Cost of sales	2,366	2,313	7,021	6,705
Operating income	193	164	546	490
Depreciation and amortization	86	80	251	229
Global Distribution and Value-Added Services [Member]
Segment Reporting Information [Line Items]
Net sales	2,940	2,835	8,681	8,234
Global Specialty Products [Member]
Segment Reporting Information [Line Items]
Net sales	350	331	1,081	1,011
Global Technology [Member]
Segment Reporting Information [Line Items]
Net sales	181	173	535	502
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	3,516	3,382	10,436	9,871
Operating income	330	295	909	816
Depreciation and amortization	28	27	81	74
Operating Segments [Member] \| Global Distribution and Value-Added Services [Member]
Segment Reporting Information [Line Items]
Net sales	2,944	2,840	8,694	8,247
Cost of sales	2,186	2,138	6,460	6,176
Operating expenses	537	524	1,649	1,567
Operating income	221	178	585	504
Depreciation and amortization	8	7	22	20
Operating Segments [Member] \| Global Distribution and Value-Added Services [Member] \| Global Dental [Member]
Segment Reporting Information [Line Items]
Net sales	1,806	1,714	5,426	5,050
Operating Segments [Member] \| Global Distribution and Value-Added Services [Member] \| Global Dental Merchandise [Member]
Segment Reporting Information [Line Items]
Net sales	1,295	1,210	3,924	3,613
Operating Segments [Member] \| Global Distribution and Value-Added Services [Member] \| Global Dental Equipment [Member]
Segment Reporting Information [Line Items]
Net sales	449	440	1,322	1,263
Operating Segments [Member] \| Global Distribution and Value-Added Services [Member] \| Global Value-Added Services [Member]
Segment Reporting Information [Line Items]
Net sales	62	64	180	174
Operating Segments [Member] \| Global Distribution and Value-Added Services [Member] \| Global Medical [Member]
Segment Reporting Information [Line Items]
Net sales	1,138	1,126	3,268	3,197
Operating Segments [Member] \| Global Specialty Products [Member]
Segment Reporting Information [Line Items]
Net sales	391	369	1,207	1,122
Cost of sales	169	165	532	501
Operating expenses	166	133	499	442
Operating income	56	71	176	179
Depreciation and amortization	10	11	28	28
Operating Segments [Member] \| Global Technology [Member]
Segment Reporting Information [Line Items]
Net sales	181	173	535	502
Cost of sales	56	58	165	163
Operating expenses	72	69	222	206
Operating income	53	46	148	133
Depreciation and amortization	10	9	31	26
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Operating income	(51)	(33)	(127)	(99)
Depreciation and amortization	14	7	35	22
Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Net sales	(45)	(43)	(139)	(124)
Intersegment Elimination [Member] \| Global Distribution and Value-Added Services [Member]
Segment Reporting Information [Line Items]
Net sales	(4)	(5)	(13)	(13)
Intersegment Elimination [Member] \| Global Specialty Products [Member]
Segment Reporting Information [Line Items]
Net sales	(41)	(38)	(126)	(111)
Intersegment Elimination [Member] \| Global Technology [Member]
Segment Reporting Information [Line Items]
Net sales	0	0	0	0
Eliminations and Reconciling Items [Member]
Segment Reporting Information [Line Items]
Net sales	(45)	(43)	(139)	(124)
Operating income	(86)	(98)	(236)	(227)
Depreciation and amortization	$ 44	$ 46	$ 135	$ 133

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