Retirement Benefit Plans (Tables)

12 Months Ended

Jan. 31, 2018

Retirement Benefits [Abstract]

Schedule of Changes in Projected Benefit Obligations

The changes in the projected benefit obligations and plan assets for the plans described above were as follows:

	Fiscal year ended January 31,
	2018			2017
Beginning projected benefit obligation	$	146.4		$	145.2
Service cost	5.2			5.6
Interest cost	2.7			3.0
Actuarial (gain) loss	(2.8		)	7.1
Benefits paid	(3.3		)	(2.6		)
Foreign currency exchange rate changes	13.9			(9.5		)
Curtailments and settlements	(8.2		)	(6.8		)
Contributions by plan participants	4.0			4.4
Plan amendment	0.2			—
Ending projected benefit obligation	$	158.1		$	146.4
Beginning fair value of plan assets	$	107.4		$	101.4
Actual return on plan assets	3.8			4.2
Contributions paid by employer	6.5			15.3
Contributions paid by plan participants	4.0			4.4
Benefit payments	(3.3		)	(2.6		)
Curtailments and settlements	(8.0		)	(6.8		)
Foreign currency exchange rate changes	10.7			(8.5		)
Ending fair value of plan assets	$	121.1		$	107.4
Funded status	$	(37.0	)	$	(39.0	)

Schedule of Amounts Recognized in Balance Sheet

The amounts recognized on the consolidated balance sheets at the end of each period were as follows:

	Fiscal Year Ended January 31,
	2018		2017
Other long-term liabilities	$	37.0	$	39.0
Accumulated other comprehensive loss, before tax	31.7		37.0
Net amount recognized	$	68.7	$	76.0

Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets

Included in the aggregate data in the following tables are the amounts applicable to the Company's defined benefit pension plans, with accumulated benefit obligations in excess of plan assets, as well as plans with projected benefit obligations in excess of plan assets. Amounts related to such plans at the end of each period were as follows:

	Fiscal Year Ended January 31,
	2018		2017
Plans with accumulated benefit obligations in excess of plan assets:
Accumulated benefit obligations	$	130.7	$	119.2
Plan assets	112.1		98.3
Plans with projected benefit obligations in excess of plan assets:
Projected benefit obligations	$	158.1	$	146.4
Plan assets	121.1		107.4

Schedule of Allocation of Plan Assets

Defined benefit pension plan assets measured at fair value on a recurring basis consisted of the following investment categories at the end of each period as follows:

	Fiscal Year Ended January 31,
	2018								2017
	Level 1		Level 2		Level 3		Total		Total
Insurance contracts	$	—	$	53.0	$	—	$	53.0	$	46.3
Other investments	—		17.0		—		17.0		9.4
Total assets measured at fair value	$	—	$	70.0	$	—	70.0		55.7
Cash							0.2		—
Investment Fund valued using net asset value							50.9		51.7
Total pension plan assets at fair value							$	121.1	$	107.4

Schedule of Expected Benefit Payments

Estimated benefit payments over the next 10 fiscal years are as follows:

	Pension Benefits
2019	$	7.1
2020	6.5
2021	6.4
2022	6.4
2023	6.4
2024-2028	34.8

Schedule of Net Benefit Costs

The components of net periodic pension cost for the defined benefit pension plans for fiscal 2018, 2017, and 2016 are as follows:

	Fiscal Year Ended January 31,
	2018			2017			2016
Service cost for benefits earned during the period	$	5.2		$	5.6		$	5.7
Interest cost on projected benefit obligation	2.7			3.0			3.3
Expected return on plan assets	(3.9		)	(4.2		)	(3.9		)
Amortization of prior service credit	(0.3		)	(0.3		)	(0.1		)
Amortization of loss	1.2			1.5			1.4
Settlement loss	1.9			1.2			—
Curtailment gain	(0.1		)	—			—
Net periodic benefit cost	$	6.7		$	6.8		$	6.4

Schedule of Amounts Recognized in Other Comprehensive Income (Loss)

The components of other comprehensive income for the defined benefit pension plans before taxes for fiscal 2018, 2017, and 2016 are as follows:

	Fiscal Year Ended January 31,
	2018			2017			2016
Prior service credit for period	$	0.2		$	—		$	(2.2	)
Net (gain) loss for period	(2.5		)	7.2			9.1
Effect of settlement	(1.9		)	(1.2		)	—
Effect of curtailment	(0.2		)	—			—
Amortization of prior service credit	0.3			0.3			0.1
Amortization of net loss	(1.2		)	(1.5		)	(1.4		)
Other comprehensive (income) loss	$	(5.3	)	$	4.8		$	5.6

Schedule of Net Periodic Benefit Cost Not yet Recognized

The amounts recorded in accumulated other comprehensive loss before taxes at the end of each period were as follows:

	Fiscal Year Ended January 31,
	2018			2017
Net prior service credit	$	(3.1	)	$	(3.6	)
Net actuarial loss	34.8			40.6
Accumulated other comprehensive loss, before tax	$	31.7		$	37.0

Schedule of Amounts in Accumulated Other Comprehensive Income (Loss) to be Recognized over Next Fiscal Year

The estimated amounts that will be amortized from accumulated other comprehensive loss into net periodic benefit cost over the next fiscal year for the qualified defined benefit pension plans are as follows:

	Pension Benefits
Amortization of prior service credit	$	0.2
Amortization of the net loss	(0.6		)
Total amortization	$	(0.4	)

Schedule of Assumptions Used

Weighted average actuarial assumptions used to determine benefit obligations for the plans at the end of each period were as follows:

	Fiscal Year Ended January 31,
	2018		2017		2016
Discount rate	1.8	%	1.7	%	2.2	%
Rate of compensation increase	2.6	%	2.6	%	2.6	%

Weighted average actuarial assumptions used to determine costs for the plans for each period were as follows:

	Fiscal Year Ended January 31,
	2018		2017		2016
Discount rate	2.4	%	3.2	%	3.2	%
Expected long-term rate of return on plan assets	3.3	%	4.3	%	3.8	%
Rate of compensation increase	2.3	%	2.2	%	2.2	%