Employee Benefit Plans (Details) - USD ($) $ in Millions							12 Months Ended				169 Months Ended	252 Months Ended
	Jan. 01, 2016	Jan. 01, 2015	Jan. 01, 2014	May. 01, 2006	Jan. 01, 2005	Mar. 01, 2002	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 1995	Mar. 31, 2016	Mar. 31, 2016
Overlapping Stock Purchase Period 1 [Member]
Deferred compensation arrangement, by type of deferred compensation [Line Items]
Overlapping period on purchase of common stock under purchase plan (in number of months)						24 months
Overlapping Stock Purchase Period 2 [Member]
Deferred compensation arrangement, by type of deferred compensation [Line Items]
Overlapping period on purchase of common stock under purchase plan (in number of months)						18 months
Overlapping Stock Purchase Period 3 [Member]
Deferred compensation arrangement, by type of deferred compensation [Line Items]
Overlapping period on purchase of common stock under purchase plan (in number of months)						12 months
Overlapping Stock Purchase Period 4 [Member]
Deferred compensation arrangement, by type of deferred compensation [Line Items]
Overlapping period on purchase of common stock under purchase plan (in number of months)						6 months
Defined contribution pension [Member]
Deferred compensation arrangement, by type of deferred compensation [Line Items]
Percentage of employee's base salary allowed as employee contribution (in hundredths)							60.00%				60.00%	60.00%
Amount of company contributions							$ 4.4	$ 3.9	$ 3.6
Employee stock purchase plan, 2001 plan [Member]
Deferred compensation arrangement, by type of deferred compensation [Line Items]
Percentage of fair market value of common stock for employee purchase (in hundredths)						85.00%
Number of additional shares reserved under purchase plan (in shares)	1,017,492	0	0
Number of shares of common stock reserved for issuance (in shares)							12,295,354				12,295,354	12,295,354
Shares issued under purchase plan (in shares)											6,651,710
Employee stock purchase plan, employees in non-US locations [Member]
Deferred compensation arrangement, by type of deferred compensation [Line Items]
Percentage of fair market value of common stock for employee purchase (in hundredths)				85.00%
Number of additional shares reserved under purchase plan (in shares)	203,498	0	0
Number of shares of common stock reserved for issuance (in shares)							1,703,783				1,703,783	1,703,783
Shares issued under purchase plan (in shares)												1,063,360
Percentage of fair market value of common stock at the beginning or end of semi-annual purchase plan period, during fiscal 1995 (in hundredths)										100.00%
Supplemental Employee Retirement Plans, Defined Benefit [Member]
Deferred compensation arrangement, by type of deferred compensation [Line Items]
Defined Benefit Plan, Benefit Obligation							$ 5.2				$ 5.2	$ 5.2
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months							0.7				0.7	0.7
Defined Benefit Plan, Expected Future Benefit Payments, Year Two Through Year Ten							3.8				$ 3.8	$ 3.8
Management incentive compensation plan [Member]
Deferred compensation arrangement, by type of deferred compensation [Line Items]
Compensation expense charged against operations							19.1	24.2	24.4
Cash bonus plan [Member]
Deferred compensation arrangement, by type of deferred compensation [Line Items]
Compensation expense charged against operations							$ 14.2	$ 15.9	$ 15.2
Maximum | Employee stock purchase plan, 2001 plan [Member]
Deferred compensation arrangement, by type of deferred compensation [Line Items]
Maximum automatic increase in number of common stock shares under purchase plan (in shares)					1,500,000
Percentage of outstanding shares of common stock used to determine automatic annual increase in common stock (in hundredths)					0.50%