Debt (Tables)

12 Months Ended

Jan. 31, 2018

Debt Disclosure [Abstract]

Short-Term Borrowings

			January 31,
(in millions)	2018		2017
Short-term borrowings:
Credit Facilities	$	33.5	$	93.0
Other credit facilities	87.1		135.7
	$	120.6	$	228.7

Long-Term Debt

Long-term debt:
Unsecured Senior Notes:
2012 4.40% Series B Notes, due July 2042 a	$	250.0	$	250.0
2014 3.80% Senior Notes, due October 2024 b, c	250.0		250.0
2014 4.90% Senior Notes, due October 2044 b, c	300.0		300.0
2016 0.78% Senior Notes, due August 2026 b, d	91.9		88.0
	891.9		888.0
Less unamortized discounts and debt issuance costs	9.0		9.6
	$	882.9	$	878.4

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

Aggregate Maturities of Long-term Debt

Aggregate maturities of long-term debt as of January 31, 2018 are as follows:

Years Ending January 31,	Amount a (in millions)
2019	$
2020	—
2021	—
2022	—
2023	50.0
Thereafter	841.9
	$	891.9

^a  Amounts exclude any unamortized discount or premium.