Debt (Tables)

9 Months Ended

Oct. 31, 2016

Debt Disclosure [Abstract]

Schedule of Short-term Debt

(in millions)	October 31, 2016		January 31, 2016		October 31, 2015
Short-term borrowings:
Credit Facilities	$	82.5	$	76.6	$	66.2
Other credit facilities	137.0		145.0		132.1
	$	219.5	$	221.6	$	198.3

Schedule of Long-term Debt Instruments

Long-term debt:
Unsecured Senior Notes:
2010 1.72% Senior Notes, due September 2016 a, b	$	—	$	84.2	$	82.6
2012 4.40% Series B Senior Notes, due July 2042 c	250.0		250.0		250.0
2014 3.80% Senior Notes, due October 2024 d, e	250.0		250.0		250.0
2014 4.90% Senior Notes, due October 2044 d, e	300.0		300.0		300.0
2016 0.78% Senior Notes, due August 2026 b, d	95.4		—		—
	895.4		884.2		882.6
Less current portion of long-term debt	—		84.2		82.6
Less unamortized discounts and debt issuance costs	9.7		10.0		10.2
	$	885.7	$	790.0	$	789.8

^a  These Senior Notes were repaid upon the maturity thereof during the three months ended October 31, 2016 using the proceeds from the issuance of the 0.78% Senior Notes due August 2026.

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

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

^d  These agreements require lump sum repayments upon maturity.

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