Income Tax - Net Deferred Tax Assets and Liabilities Components (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Domestic deferred tax liabilities	$ 2,184.0	$ 2,029.7
Foreign deferred tax assets	38.6	123.7
Foreign deferred tax liabilities	501.2	623.4
Net deferred tax liabilities	$ 2,646.6	$ 2,529.4

Represents the non-current portion of deferred tax liabilities, net, foreign.

No definition available.

Name:	tap_DeferredTaxLiabilitiesNetNoncurrentForeign
Namespace Prefix:	tap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant