Comprehensive Income - Accumulated Other Comprehensive Income and Comprehensive Income Components (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 27, 2025	Sep. 28, 2024	Sep. 27, 2025	Sep. 28, 2024	Dec. 28, 2024
Attributable to Redeemable noncontrolling interests:
Foreign currency translation adjustment	$ (28)		$ (28)		$ (56)
Attributable to noncontrolling interests:
Foreign currency translation adjustment	0		0		(1)
Attributable to Henry Schein, Inc.:
Foreign currency translation adjustment	(192)		(192)		(371)
Unrealized loss from hedging activities	(22)		(22)		0
Pension adjustment loss	(8)		(8)		(8)
Accumulated other comprehensive loss	(222)		(222)		(379)
Total Accumulated other comprehensive loss	(250)		(250)		$ (436)
Components of Comprehensive Income
Net Income (loss)	109	$ 99	316	$ 302
Foreign currency translation gain (loss)	(1)	58	208	(58)
Tax effect	0	0	0	0
Foreign currency translation gain (loss)	(1)	58	208	(58)
Unrealized gain (loss) from hedging activities	5	(25)	(30)	(4)
Tax effect	(1)	7	8	1
Unrealized gain (loss) from hedging activities	4	(18)	(22)	(3)
Pension adjustment gain	0	0	1	0
Tax effect	0	0	(1)	0
Pension adjustment gain	0	0	0	0
Comprehensive income	$ 112	$ 139	$ 502	$ 241

Accumulated adjustment attributable to nonredeemable noncontrolling interests, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains (losses).

No definition available.