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v3.21.1

FINANCING ARRANGEMENTS - Senior Secured Notes (Details) | 3 Months Ended
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Mar. 31, 2021
Debt Disclosure [Abstract] |
Redemption price percentage to change in control (as a percent) | 101.00%

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- Definition Debt Instrument, Redemption Price, Percentage, Change in Control + References No definition available. + Details
Name: | bhc_DebtInstrumentRedemptionPricePercentageChangeinControl
Namespace Prefix: | bhc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_DebtDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration