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Concentrations of Risk (Narrative) (Details) - manufacturer	3 Months Ended		9 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Concentration Risk [Line Items]
Number of third-party manufacturers	112	114	112	114
Sales | Customer Concentration Risk | Walmart
Concentration Risk [Line Items]
Concentration risk, percentage (percent)	22.30%	21.40%	23.50%	24.00%
Sales | Supplier Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage (percent)			60.40%	74.20%
Number of third-party manufacturers with long-term contracts			33	46
Top 5 brands | Sales | Product Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage (percent)	41.70%	39.90%	42.80%	41.20%

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Number of Third-party Manufacturers

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Number of Third-party Manufacturers with Long-term Contracts

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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.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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