Revenue - Revenue by Geography (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Disaggregation of Revenue [Line Items]
Net sales	$ 5,061	$ 4,120	$ 9,724	$ 7,977
U.S.
Disaggregation of Revenue [Line Items]
Net sales	3,224	2,466	6,185	4,724
U.S. | BSX Reportable Segments [Member]
Disaggregation of Revenue [Line Items]
Net sales	3,224	2,466	6,185	4,724
EMEA [Member] | BSX Reportable Segments [Member]
Disaggregation of Revenue [Line Items]
Net sales	878	822	1,725	1,625
APAC [Member] | BSX Reportable Segments [Member]
Disaggregation of Revenue [Line Items]
Net sales	790	670	1,491	1,317
Latin America and Canada [Member] | BSX Reportable Segments [Member]
Disaggregation of Revenue [Line Items]
Net sales	169	162	324	311
Emerging Markets [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 758	$ 680	$ 1,449	$ 1,328