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Stockholders' / Members' Equity (Details) - USD ($)
shares in Millions, $ in Millions
3 Months Ended 4 Months Ended 12 Months Ended
Jun. 30, 2017
Feb. 24, 2018
Jun. 18, 2016
Feb. 24, 2018
Feb. 25, 2017
Feb. 27, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Cash distribution made to members $ 250.0          
Additional equity-based compensation expense due to plan modification $ 2.4          
Employee Benefits and Share-based Compensation         $ 7.1  
Income tax benefit from compensation expense       $ 15.6 11.1 $ 12.5
Phantom units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Equity-based compensation expense       45.9 $ 53.3 $ 97.8
Compensation cost not yet recognized   $ 40.6   $ 40.6    
Number of units unvested remaining   2.6   2.6    
Period for recognition of unrecognized compensation cost       1 year 5 months    
Fair value of vested units during period       $ 32.1    
Performance-based | Phantom units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Additional equity-based compensation expense due to plan modification   $ 11.2 $ 23.3