Fair Value of Financial Instruments (Policies)

12 Months Ended

Jan. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurement, Policy [Policy Text Block]

Level 1 – Quoted prices in active markets for identical assets or liabilities, which are considered to be most reliable.

Level 2 – Observable market-based inputs or unobservable inputs that are corroborated by market data.

Level 3 – Unobservable inputs reflecting the reporting entity's own assumptions, which require the most judgment.

Fair Value of Financial Instruments, Policy [Policy Text Block]

The Company's foreign exchange forward contracts, as well as its put option contracts and cross-currency swaps, are primarily valued using the appropriate foreign exchange spot rates. The Company's precious metal forward contracts and collars are primarily valued using the relevant precious metal spot rate.