Finite-lived Intangible Assets, Accumulated Amortization [Abstract]

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Finite-Lived Intangible Assets, Accumulated Amortization, Translation Adjustments

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- Definition

Finite-lived Intangible Assets, Accumulated Amortization, Written off Related to Sale of Business Unit

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- Definition

Finite-lived Intangible Assets, Reclassified from Indefinite-lived During Period

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- Definition

Finite-lived Intangible Assets, Written off Related to Sale of Business Unit, Gross

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Indefinite-lived Intangible Assets, Reclassified to Finite-lived During Period

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No definition available.

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- Definition

Intangible Assets, Acquired

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- Definition

Intangible Assets, Gross

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- Definition

Intangible Assets, Gross [Abstract]

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No definition available.

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- Definition

Intangible Assets, Net Reclassification

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- Definition

Intangible Assets, Translation Adjustments

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Intangible Assets, Written off Related to Sale of Business Unit, Gross

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- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Amount of foreign currency translation gain (loss) which increases (decreases) assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

No definition available.

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

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No definition available.

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- Definition

The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 3
-Subparagraph (b)
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.

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Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Section 50
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Amount of foreign currency translation gain (loss) which increases (decreases) an asset, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

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No definition available.

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Amount of divestiture of an asset lacking physical substance and having a projected indefinite period of benefit to fair value. Excludes financial assets and goodwill.

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No definition available.

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Amount of increase in assets, excluding financial assets and goodwill, lacking physical substance with an indefinite life, from an acquisition.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Section 45
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Intangible Assets (Reconciliation of Activity) (Details) - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Indefinite-Lived Intangible Assets [Abstract]
Indefinite-lived intangibles, beginning				$ 2,589,155	$ 2,589,155
Indefinite-lived intangibles, ending	$ 2,490,303				2,490,303	$ 2,589,155
Finite-Lived Intangible Assets, Gross [Abstract]
Finite-lived intangibles, tradename impairment	(99,924)	$ 0	$ 0	0	(99,924)	0	$ 0
Finite-lived Intangible Assets, Accumulated Amortization [Abstract]
Finite-lived intangibles, accumulated amortization, beginning				127,343	127,343	115,203
Finite-lived intangibles, accumulated amortization, additions					23,300	19,753
Finite-lived intangible assets, accumulated amortization, reductions						(7,610)
Finite-lived intangibles, accumulated amortization, effects of foreign currency exchange rates						(3)
Finite-lived intangibles, accumulated amortization, ending						127,343	115,203
Intangible Assets, Gross [Abstract]
Intangible assets, gross, beginning				3,030,956	3,030,956	2,437,926
Intangible assets, additions						747,600
Intangible assets, tradename impairment					(99,924)
Intangible assets, reclassifications						0
Intangible assets, reductions						(154,151)
Intangible assets, effects of foreign currency exchange rates					585	(419)
Intangible assets, gross, ending	2,931,617				2,931,617	3,030,956	2,437,926
Finite-lived intangible assets	290,613				290,613	314,458
Intangible assets, net (excluding goodwill)	2,780,916				2,780,916	2,903,613
North American OTC Healthcare
Intangible Assets, Gross [Abstract]
Intangible assets, net (excluding goodwill)	2,641,092				2,641,092	2,691,392
International OTC Healthcare
Intangible Assets, Gross [Abstract]
Intangible assets, net (excluding goodwill)	90,074				90,074	90,026
Household Cleaning
Intangible Assets, Gross [Abstract]
Intangible assets, net (excluding goodwill)	49,750				49,750	122,195
Finite Lived Tradenames and Customer Relationships
Finite-Lived Intangible Assets, Gross [Abstract]
Finite-lived intangibles, gross, beginning				441,801	441,801	417,880
Finite-lived intangibles, additions						98,900
Finite-lived intangibles, tradename impairment					(624)
Finite-lived intangibles, reclassified						2,064
Finite-lived intangibles, reductions						(76,903)
Finite-lived intangibles, effects of foreign currency exchange rates					137	(140)
Finite-lived intangibles, gross, ending	441,314				441,314	441,801	417,880
Finite-lived Intangible Assets, Accumulated Amortization [Abstract]
Finite-lived intangibles, accumulated amortization, beginning				127,343	127,343	115,203
Finite-lived intangibles, accumulated amortization, additions					23,349	19,753
Finite-lived intangible assets, accumulated amortization, reductions						(7,610)
Finite-lived intangibles, accumulated amortization, effects of foreign currency exchange rates					9	(3)
Finite-lived intangibles, accumulated amortization, ending	150,701				150,701	127,343	115,203
Intangible Assets, Gross [Abstract]
Finite-lived intangible assets	290,613				290,613	314,458
Finite Lived Tradenames and Customer Relationships \| North American OTC Healthcare
Intangible Assets, Gross [Abstract]
Finite-lived intangible assets	265,356				265,356	287,056
Finite Lived Tradenames and Customer Relationships \| International OTC Healthcare
Intangible Assets, Gross [Abstract]
Finite-lived intangible assets	6,068				6,068	6,468
Finite Lived Tradenames and Customer Relationships \| Household Cleaning
Intangible Assets, Gross [Abstract]
Finite-lived intangible assets	19,189				19,189	20,934
Indefinite Lived Tradenames
Indefinite-Lived Intangible Assets [Abstract]
Indefinite-lived intangibles, beginning				2,589,155	2,589,155	2,020,046
Indefinite-lived intangibles, additions						648,700
Indefinite-lived intangibles, reclassifications						(2,064)
Indefinite-lived intangibles, tradename impairment					(99,300)
Indefinite-lived intangibles, reductions						(77,248)
Indefinite-lived intangibles, effects of foreign currency exchange rates					448	(279)
Indefinite-lived intangibles, ending	2,490,303				2,490,303	2,589,155	$ 2,020,046
Indefinite Lived Tradenames \| North American OTC Healthcare
Indefinite-Lived Intangible Assets [Abstract]
Indefinite-lived intangibles, beginning				2,404,336	2,404,336
Indefinite-lived intangibles, ending	2,375,736				2,375,736	2,404,336
Indefinite Lived Tradenames \| International OTC Healthcare
Indefinite-Lived Intangible Assets [Abstract]
Indefinite-lived intangibles, beginning				83,558	83,558
Indefinite-lived intangibles, ending	84,006				84,006	83,558
Indefinite Lived Tradenames \| Household Cleaning
Indefinite-Lived Intangible Assets [Abstract]
Indefinite-lived intangibles, beginning				$ 101,261	101,261
Indefinite-lived intangibles, ending	$ 30,561				$ 30,561	$ 101,261