Changes in Other Comprehensive Income (AOCI Rollforward with Reclassification) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
AOCI attributable to Boston Scientific common stockholders, Net of Tax [Roll Forward]
Beginning Stockholders' Equity			$ 21,770
Other comprehensive income (loss)	$ 34	$ (282)	(957)	$ (173)
Ending Stockholders' Equity	23,394	20,708	23,394	20,708
Accumulated other comprehensive income (loss), net of tax
AOCI attributable to Boston Scientific common stockholders, Net of Tax [Roll Forward]
Beginning Stockholders' Equity	(722)	164	275	49
Other comprehensive income (loss) before reclassifications	46	(255)	(892)	(56)
(Income) loss amounts reclassified from accumulated other comprehensive income	(14)	(37)	(72)	(122)
Other comprehensive income (loss)	32	(292)	(964)	(178)
Ending Stockholders' Equity	(689)	(128)	(689)	(128)
Foreign Currency Translation Adjustment
AOCI attributable to Boston Scientific common stockholders, Net of Tax [Roll Forward]
Beginning Stockholders' Equity	(560)	13	136	(96)
Other comprehensive income (loss) before reclassifications	(23)	(188)	(709)	(73)
(Income) loss amounts reclassified from accumulated other comprehensive income	(7)	(3)	(17)	(10)
Other comprehensive income (loss)	(30)	(191)	(726)	(83)
Ending Stockholders' Equity	(589)	(179)	(589)	(179)
Net Change in Derivative Financial Instruments
AOCI attributable to Boston Scientific common stockholders, Net of Tax [Roll Forward]
Beginning Stockholders' Equity	(145)	159	155	154
Other comprehensive income (loss) before reclassifications	69	(66)	(183)	17
(Income) loss amounts reclassified from accumulated other comprehensive income	(7)	(34)	(54)	(112)
Other comprehensive income (loss)	62	(100)	(238)	(95)
Ending Stockholders' Equity	(83)	59	(83)	59
Net Change in Defined Benefit Pensions and Other Items
AOCI attributable to Boston Scientific common stockholders, Net of Tax [Roll Forward]
Beginning Stockholders' Equity	(17)	(8)	(16)	(8)
Other comprehensive income (loss) before reclassifications	0	0	0	0
(Income) loss amounts reclassified from accumulated other comprehensive income	0	0	0	0
Other comprehensive income (loss)	0	0	(1)	0
Ending Stockholders' Equity	$ (17)	$ (8)	$ (17)	$ (8)