Debt - (Tables)

12 Months Ended

Jan. 31, 2020

Debt Disclosure [Abstract]

Short-Term Borrowings

			January 31,
(in millions)	2020		2019
Short-term borrowings:
Credit Facilities	$	13.8	$	13.5
Other credit facilities	134.1		99.9
	$	147.9	$	113.4

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			91.8
	891.9			891.8
Less: unamortized discounts and debt issuance costs	(7.8		)	(8.4		)
	$	884.1		$	883.4

^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, 2020 are as follows:

Years Ending January 31,	Amount a (in millions)
2021	$	—
2022	—
2023	50.0
2024	—
2025	250.0
Thereafter	591.9
	$	891.9

^a 

Amounts exclude any unamortized discount or premium.