Revenue - Revenue by Geography (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Disaggregation of Revenue [Line Items]
Net sales	$ 4,663	$ 3,856
U.S.
Disaggregation of Revenue [Line Items]
Net sales	2,960	2,258
U.S. | BSX Reportable Segments [Member]
Disaggregation of Revenue [Line Items]
Net sales	2,960	2,258
EMEA [Member] | BSX Reportable Segments [Member]
Disaggregation of Revenue [Line Items]
Net sales	846	803
APAC [Member] | BSX Reportable Segments [Member]
Disaggregation of Revenue [Line Items]
Net sales	701	647
Latin America and Canada [Member] | BSX Reportable Segments [Member]
Disaggregation of Revenue [Line Items]
Net sales	155	149
Emerging Markets [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 690	$ 648