Derivative Instrument Notional Non Monetary Ounces Outstanding

No definition available.

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- Definition

Amount that remains recorded as an unrealized loss in accumulated other comprehensive loss as of the end of the period. The loss was incurred on forward-starting interest rate swaps and is amortized over the term of the debt to which the swaps relate.

+ References

No definition available.

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- Definition

The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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-Publisher FASB
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- Definition

Face (par) amount of debt instrument at time of issuance.

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- 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.

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- Definition

Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount before tax and reclassification adjustments of other comprehensive income (loss).

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- Definition

Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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- Definition

Amount, before tax, of reclassification from accumulated other comprehensive income (AOCI) for gain (loss) from discontinuance of cash flow hedge included in assessment of hedge effectiveness.

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Hedging Instruments - Additional Information (Details) $ in Millions	3 Months Ended
	Apr. 30, 2020 USD ($) oz	Apr. 30, 2019 USD ($)	Jul. 31, 2012 USD ($)
Derivative [Line Items]
Net pre-tax derivative gains and losses	$ 7.0
2012 4.40% Series B Notes, due July 2012
Derivative [Line Items]
Debt instrument face amount			$ 250.0
Forward-starting interest rate swaps \| 2012 Debt Issuance
Derivative [Line Items]
Unrealized loss on interest rate swaps	15.8
Forward-starting interest rate swaps \| 2014 Debt Issuance
Derivative [Line Items]
Unrealized loss on interest rate swaps	$ 3.3
Foreign exchange forward contracts \| Maximum
Derivative [Line Items]
Term of contract (months)	12 months
Precious metal forward contracts
Derivative [Line Items]
Reclassified deferred hedging gains resulting from discontinuance of cash flow hedge	$ 4.2
Precious metal forward contracts \| Maximum
Derivative [Line Items]
Term of contract (months)	18 months
Platinum
Derivative [Line Items]
Precious metal derivatives, ounces outstanding (ounces) \| oz	24,500
Silver
Derivative [Line Items]
Precious metal derivatives, ounces outstanding (ounces) \| oz	474,800
Silver \| Not Designated as Hedging Instrument
Derivative [Line Items]
Precious metal derivatives, ounces outstanding (ounces) \| oz	141,300
Gold
Derivative [Line Items]
Precious metal derivatives, ounces outstanding (ounces) \| oz	69,800
Gold \| Not Designated as Hedging Instrument
Derivative [Line Items]
Precious metal derivatives, ounces outstanding (ounces) \| oz	20,600
Other income, net \| Not Designated as Hedging Instrument
Derivative [Line Items]
Gain on derivatives included in earnings	$ 8.3
Cash Flow Hedging \| Cost of sales \| Forward-starting interest rate swaps
Derivative [Line Items]
Gain on derivatives included in earnings		$ 0.0
Cash Flow Hedging \| Cost of sales \| Foreign exchange forward contracts
Derivative [Line Items]
Gain on derivatives included in earnings	(0.3)	(1.1)
Pre-tax gain		0.0
Cash Flow Hedging \| Cost of sales \| Precious metal forward contracts
Derivative [Line Items]
Gain on derivatives included in earnings	(4.6)	1.1
Pre-tax gain		0.0
Cash Flow Hedging \| Other income, net \| Forward-starting interest rate swaps
Derivative [Line Items]
Gain on derivatives included in earnings		0.0
Cash Flow Hedging \| Other income, net \| Foreign exchange forward contracts
Derivative [Line Items]
Gain on derivatives included in earnings		0.0
Pre-tax gain		0.0
Cash Flow Hedging \| Other income, net \| Precious metal forward contracts
Derivative [Line Items]
Gain on derivatives included in earnings		0.0
Pre-tax gain		$ 0.0