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Operating Segments - Revenue from External Customers by Products and Services (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
May. 30, 2015
Feb. 28, 2015
 [1]
Nov. 29, 2014
 [1]
Aug. 30, 2014
 [1]
May. 31, 2014
 [1]
Mar. 01, 2014
 [1]
Nov. 30, 2013
 [1]
Aug. 31, 2013
 [1]
Jun. 01, 2013
Mar. 02, 2013
Dec. 01, 2012
Sep. 01, 2012
May. 30, 2015
May. 31, 2014
Jun. 01, 2013
Revenue from External Customer                              
Net sales $ 550.7 $ 516.4 $ 565.4 $ 509.7 $ 487.5 $ 455.9 $ 470.5 $ 468.1 $ 460.0 $ 423.5 $ 441.8 $ 449.7 $ 2,142.2 $ 1,882.0 $ 1,774.9
Systems                              
Revenue from External Customer                              
Net sales                         563.4 571.6 572.9
Seating                              
Revenue from External Customer                              
Net sales                         805.5 658.2 609.8
Freestanding And Storage                              
Revenue from External Customer                              
Net sales                         484.1 386.4 395.0
Other                              
Revenue from External Customer                              
Net sales [2]                         $ 289.2 $ 265.8 $ 197.2
[1] The sum of the quarters does not equal the annual balance reflected in the Consolidated Statements of Comprehensive Income due to rounding associated with the calculations on an individual quarter basis.
[2] “Other” primarily consists of textiles or uncategorized product sales and service sales.