XML 30 R72.htm IDEA: XBRL DOCUMENT v3.19.3
Retirement and Other Benefit Plans - Additional Information (Details) - USD ($)
 3 Months Ended 9 Months Ended 12 Months Ended
Apr. 15, 2019
Apr. 03, 2019
Sep. 30, 2019
Sep. 28, 2018
Sep. 30, 2019
Sep. 28, 2018
Dec. 31, 2018
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]              
Shares fully vested, Description         Shares allocated to a participant’s account are fully vested after six years of credited service, or in the event(s) of reaching age 65, death or disability while an active employee of the Company.    
Shares fully vested after credited service         6 years    
Company's stock held by ESOP     78,138,602   78,138,602   78,172,809
ESOP shares aggregate redemption, value     $ 2,600,000,000   $ 2,600,000,000   $ 1,900,000,000
Dividends payment, date May 08, 2019            
Dividends declared amount             0
Other Noncurrent Assets              
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]              
Defined benefit pension plan, net assets position     1,700,000   1,700,000   $ 1,700,000
Board of Directors              
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]              
Common stock dividend ratio 2            
Common stock dividend date May 07, 2019            
Initial public offering date May 08, 2019            
Common stock dividend payment date May 08, 2019            
IPO | Board of Directors              
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]              
Dividends payable, amount per share   $ 2.00          
Dividends payable   $ 52,100,000          
Dividends payment, date   May 10, 2019          
Direct Costs of Contracts and Indirect, General and Administrative Expense              
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]              
ESOP contribution expense     $ 12,300,000 $ 11,400,000 $ 36,800,000 $ 34,100,000