Annual report pursuant to Section 13 and 15(d)

Description of Business and Summary of Significant Accounting Policies - Summary of Significant Accounting Policies (Details)

v3.19.2
Description of Business and Summary of Significant Accounting Policies - Summary of Significant Accounting Policies (Details)
$ in Millions
 12 Months Ended
Jul. 01, 2018
USD ($)
Jun. 30, 2019
USD ($)
Installment
customer
Jun. 30, 2018
USD ($)
customer
Jun. 30, 2017
USD ($)
customer
Summary of Significant Accounting Policies        
Number of customers with significant revenue | customer   1 1 2
Number of customers with significant A/R | customer   1 3  
Standard warranty coverage period   12 months    
Non-qualified deferred compensation plan payout period   15 years    
Tax cuts and jobs act, reclassification from AOCI to Retained Earnings $ 10.9      
Minimum        
Summary of Significant Accounting Policies        
Standard warranty coverage period   6 months    
Maximum        
Summary of Significant Accounting Policies        
Standard warranty coverage period   12 months    
Selling, general and administrative        
Summary of Significant Accounting Policies        
Executive deferred compensation program, compensation expense (benefit)   $ 13.6 $ 19.9 $ 20.9
Gain (loss), net on deferred compensation plan assets   14.7 19.5 20.8
Cash Long-Term Incentive Plan        
Summary of Significant Accounting Policies        
Executive deferred compensation program, compensation expense (benefit)   $ 55.5 $ 52.4 $ 48.8
Cash Long-Term Incentive Plan | Minimum        
Summary of Significant Accounting Policies        
Cash long-term incentive plan, equal vesting installments | Installment   3    
Cash long-term incentive plan, percentage of equal vesting installments   33.33%    
Cash long-term incentive plan, vesting period   3 years    
Cash Long-Term Incentive Plan | Maximum        
Summary of Significant Accounting Policies        
Cash long-term incentive plan, equal vesting installments | Installment   4    
Cash long-term incentive plan, percentage of equal vesting installments   25.00%    
Cash long-term incentive plan, vesting period   4 years