Segment Information - Company's Segments Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2016	Oct. 31, 2015
Net sales:
Net sales	$ 949.3	$ 938.2	$ 2,772.2	$ 2,891.2
Earnings from operations:
Segment Reporting Earnings Losses From Continuing Operations Before Unallocated Corporate Expenses Interest	192.1	193.8	580.1	622.5
Americas [Member]
Net sales:
Net sales	417.1	425.1	1,254.5	1,343.4
Earnings from operations:
Segment Reporting Earnings Losses From Continuing Operations Before Unallocated Corporate Expenses Interest	65.0	61.9	215.8	229.0
Asia-Pacific [Member]
Net sales:
Net sales	246.7	238.4	715.3	742.7
Earnings from operations:
Segment Reporting Earnings Losses From Continuing Operations Before Unallocated Corporate Expenses Interest	63.0	63.9	178.7	193.4
Japan [Member]
Net sales:
Net sales	150.1	132.7	419.2	380.0
Earnings from operations:
Segment Reporting Earnings Losses From Continuing Operations Before Unallocated Corporate Expenses Interest	47.8	50.8	137.4	140.7
Europe [Member]
Net sales:
Net sales	104.3	115.7	312.0	348.5
Earnings from operations:
Segment Reporting Earnings Losses From Continuing Operations Before Unallocated Corporate Expenses Interest	14.8	17.6	43.5	57.1
Reportable Geographical Components [Member]
Net sales:
Net sales	918.2	911.9	2,701.0	2,814.6
Earnings from operations:
Segment Reporting Earnings Losses From Continuing Operations Before Unallocated Corporate Expenses Interest	190.6	194.2	575.4	620.2
Other [Member]
Net sales:
Net sales	31.1	26.3	71.2	76.6
Earnings from operations:
Segment Reporting Earnings Losses From Continuing Operations Before Unallocated Corporate Expenses Interest	$ 1.5	$ (0.4)	$ 4.7	$ 2.3