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LEASES - Right-of-use Assets and Right-of-use Liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Jan. 01, 2019
--- | --- | ---
Right-of-use assets included in: |  |
Other non-current assets | $ 271 | $ 302
Lease liabilities included in: |  |
Accrued and other current liabilities | 53 |
Other non-current liabilities | 240 |
Present value of remaining lease payments | $ 293 | $ 302

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- Definition Assets, Lessee [Abstract] + References No definition available. + Details
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- Definition Liabilities, Lessee [Abstract] + References No definition available. + Details
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Namespace Prefix: | bhc_
Data Type: | xbrli:stringItemType
Balance Type: | na
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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Data Type: | xbrli:monetaryItemType
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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Balance Type: | debit
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