Debt (Tables)

9 Months Ended

Oct. 31, 2017

Debt Disclosure [Abstract]

Schedule of Short-term Debt [Table Text Block]

(in millions)	October 31, 2017		January 31, 2017		October 31, 2016
Short-term borrowings:
Credit Facilities	$	58.8	$	93.0	$	82.5
Commercial paper	43.0		—		—
Other credit facilities	91.4		135.7		137.0
	$	193.2	$	228.7	$	219.5

Schedule of Long-term Debt Instruments [Table Text Block]

Long-term debt:
Unsecured Senior Notes:
2012 4.40% Series B Senior Notes, due July 2042 a	250.0		250.0		250.0
2014 3.80% Senior Notes, due October 2024 b, c	250.0		250.0		250.0
2014 4.90% Senior Notes, due October 2044 b, c	300.0		300.0		300.0
2016 0.78% Senior Notes, due August 2026 b, d	88.3		88.0		95.4
	888.3		888.0		895.4
Less unamortized discounts and debt issuance costs	9.1		9.6		9.7
	$	879.2	$	878.4	$	885.7

^a  The agreements governing these Senior Notes require repayments of $50.0 million in aggregate every five years beginning in 2022.

^b  These agreements require lump sum repayments upon maturity.

^c  These Senior Notes were issued at a discount, which will be amortized until the debt maturity.

^d  These Senior Notes were issued, at par, ¥10.0 billion.