Retirement Benefit Plans (Tables)

12 Months Ended

Jan. 31, 2016

Compensation and Retirement Disclosure [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,
	2016			2015
Beginning projected benefit obligation	$	144.7		$	62.2
Service cost	5.7			4.6
Interest cost	3.3			3.9
Actuarial loss (gain)	6.3			18.8
Benefits paid	(6.5		)	(7.5		)
Foreign currency exchange rate changes	(10.1		)	(1.2		)
Curtailments and settlements	(2.2		)	(2.9		)
Contributions by plan participants	4.0			5.9
Business combinations	—			60.9
Ending projected benefit obligation	$	145.2		$	144.7
Beginning fair value of plan assets	$	104.2		$	40.7
Actual return on plan assets	1.3			4.1
Contributions paid by employer	4.5			4.9
Contributions paid by plan participants	4.0			5.9
Benefit payments	(6.5		)	(7.5		)
Curtailments and settlements	—			(2.9		)
Foreign currency exchange rate changes	(6.1		)	(1.2		)
Business combinations	—			60.2
Ending fair value of plan assets	$	101.4		$	104.2
Funded status	$	(43.8	)	$	(40.5	)

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,
	2016		2015
Other long-term liabilities	$	43.8	$	40.5
Accumulated other comprehensive loss, before tax	32.2		26.6
Net amount recognized	$	76.0	$	67.1

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 our 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,
	2016		2015
Plans with accumulated benefit obligations in excess of plan assets:
Accumulated benefit obligations	$	127.1	$	124.0
Plan Assets	101.4		103.9
Plans with projected benefit obligations in excess of plan assets:
Projected benefit obligations	$	145.2	$	144.7
Plan Assets	101.4		104.2

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,
	2016								2015
	Level 1		Level 2		Level 3		Total		Total
Investment fund	$	—	$	58.5	$	—	$	58.5	$	60.6
Insurance contracts	—		42.6		—		42.6		43.5
Total assets measured at fair value	—		101.1		—		101.1		104.1
Cash	0.3		—		—		0.3		0.1
Total pension plan assets at fair value	$	0.3	$	101.1	$	—	$	101.4	$	104.2

Schedule of Expected Benefit Payments

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

	Pension Benefits
2017	$	3.9
2018	3.9
2019	3.7
2020	3.5
2021	3.5
2022-2026	19.1

Schedule of Net Benefit Costs

The components of net periodic pension cost for the defined benefit pension plans for fiscal 2016, 2015, and 2014 are as follows:

	Fiscal Year Ended January 31,
	2016			2015			2014
Service cost for benefits earned during the period	$	5.7		$	4.6		$	5.4
Interest cost on projected benefit obligation	3.3			3.9			1.1
Expected return on plan assets	(3.9		)	(4.6		)	(0.8		)
Amortization of prior service credit	(0.1		)	(0.1		)	(0.1		)
Amortization of loss	1.4			0.6			1.0
Net periodic benefit cost	$	6.4		$	4.4		$	6.6

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 2016, 2015, and 2014 are as follows:

	Fiscal Year Ended January 31,
	2016			2015			2014
Prior service credit for period	$	(2.2	)	$	—		$	—
Net loss (gain) for period	9.1			18.4			(3.9		)
Amortization of prior service credit	0.1			0.1			0.1
Amortization of net loss	(1.4		)	(0.6		)	(1.0		)
Other comprehensive loss (income)	$	5.6		$	17.9		$	(4.8	)

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,
	2016			2015
Net prior service credit	$	(3.9	)	$	(1.8	)
Net actuarial loss	36.1			28.4
Accumulated other comprehensive loss, before tax	$	32.2		$	26.6

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

The estimated amounts that will be amortized from AOCI 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	$	(0.1	)
Amortization of the net loss	1.5
Total amortization	$	1.4

Schedule of Assumptions Used

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

	Fiscal Year Ended January 31,
	2016		2015		2014
Discount rate	3.2	%	3.3	%	2.3	%
Expected long-term rate of return on plan assets	3.8	%	3.9	%	1.9	%
Rate of compensation increase	2.2	%	2.2	%	2.2	%

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,
	2016		2015		2014
Discount rate	2.2	%	2.4	%	2.2	%
Rate of compensation increase	2.6	%	1.2	%	2.2	%