XML 48 R37.htm IDEA: XBRL DOCUMENT v3.10.0.1
INCOME TAXES - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 4 Months Ended 6 Months Ended 8 Months Ended
Oct. 27, 2018
Oct. 28, 2017
Apr. 28, 2018
Oct. 27, 2018
Oct. 28, 2017
Dec. 31, 2017
Income Tax Disclosure [Abstract]            
Income tax expense $ 3.0 $ 4.9   $ 7.5 $ 9.2  
Effective income tax rate 17.00% 16.80%   16.40% 17.10%  
Federal statutory income tax rate     21.00%     35.00%