Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13476-108611

+ Details

Name:	us-gaap_DebtInstrumentFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=myl_A2025EuroSeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=myl_SeniorNotesTwoThousandEighteen2.6PercentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=myl_SeniorNotesTwoThousandEighteen3.0PercentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=myl_SeniorNotesTwoThousandNineteen2.50PrecentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=myl_SeniorNotesTwoThousandNineteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=myl_SeniorNotesTwoThousandTwenty3.75PercentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=myl_SeniorNotesTwoThousandTwentyOne3.15PrecentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=myl_SeniorNotesTwoThousandTwentyThree3.125PercentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=myl_SeniorNotesTwoThousandTwentyThree4.2PercentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=myl_SeniorNotesTwoThousandTwentySix3.95PrecentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=myl_SeniorNotesTwoThousandFortyThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=myl_SeniorNotesTwoThousandFortySix5.25PrecentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Debt (Fair Value) (Narrative) (Details) - Senior Notes - USD ($) $ in Millions	Sep. 30, 2018	Jun. 15, 2018	May 23, 2018	Apr. 28, 2018	Dec. 31, 2017	Jun. 09, 2016	Dec. 09, 2015	Dec. 24, 2013	Nov. 13, 2013	Jun. 18, 2013
Debt Instrument [Line Items]
Fair value of long-term debt	$ 14,100.0				$ 14,900.0
2025 Euro Senior Notes [Member]
Debt Instrument [Line Items]
Long-term Debt	500.0
Stated percentage rate			2.125%
2018 Senior Notes (2.600% coupon)
Debt Instrument [Line Items]
Stated percentage rate										2.60%
2018 Senior Notes (3.000% coupon)
Debt Instrument [Line Items]
Stated percentage rate							3.00%
2019 Senior Notes (2.500% coupon)
Debt Instrument [Line Items]
Long-term Debt		$ 1,000.0
Stated percentage rate						2.50%
2019 Senior Notes (2.550% coupon)
Debt Instrument [Line Items]
Long-term Debt	$ 549.9			$ 500.0	$ 0.0
Stated percentage rate									2.55%
2020 Senior Notes (3.750% coupon)
Debt Instrument [Line Items]
Stated percentage rate							3.75%
2021 Senior Notes (3.150% coupon)
Debt Instrument [Line Items]
Stated percentage rate						3.15%
2023 Senior Notes (3.125% coupon)
Debt Instrument [Line Items]
Stated percentage rate								3.125%
2023 Senior Notes (4.200% coupon)
Debt Instrument [Line Items]
Stated percentage rate									4.20%
2026 Senior Notes (3.950% coupon)
Debt Instrument [Line Items]
Stated percentage rate						3.95%
2043 Senior Notes (5.400% coupon)
Debt Instrument [Line Items]
Stated percentage rate						5.40%
2046 Senior Notes (5.250% coupon)
Debt Instrument [Line Items]
Stated percentage rate						5.25%