XML 56 R39.htm IDEA: XBRL DOCUMENT v3.22.0.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details)
 12 Months Ended
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2017
USD ($)
Significant Accounting Policies [Line Items]        
Compensation costs from retirement savings plan $ 80,000,000 $ 75,000,000 $ 128,000,000  
Advertising costs 470,000,000 276,000,000 851,000,000  
Allowance for credit losses 187,000,000 207,000,000    
Change in allowance for credit losses 22,000,000 136,000,000    
Goodwill impairment charge 0 0 0  
Self-insurance reserve, current 124,000,000 121,000,000    
Self-insurance reserve, noncurrent 290,000,000 341,000,000    
Accrued expenses and other        
Significant Accounting Policies [Line Items]        
Current deferred revenue $ 346,000,000 325,000,000    
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Avendra LLC        
Significant Accounting Policies [Line Items]        
Gain (loss) on disposal       $ 664,000,000
Gain (loss) on disposal, net of tax       $ 425,000,000
Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow        
Significant Accounting Policies [Line Items]        
Self insurance review, measurement input 0.02      
Deferred revenue        
Significant Accounting Policies [Line Items]        
Change in customer contract liability $ (340,000,000)      
Customer contract liability 1,527,000,000 1,867,000,000    
Revenue recognized from customer contract liability 334,000,000      
Guest loyalty program        
Significant Accounting Policies [Line Items]        
Change in customer contract liability 200,000,000      
Customer contract liability 6,471,000,000 6,271,000,000    
Current deferred revenue 2,522,000,000 1,769,000,000    
Revenue recognized from customer contract liability 1,966,000,000      
Reclassification from deferred revenue 228,000,000      
Change in customer contract liability from change in estimates (58,000,000)      
Reimbursements        
Significant Accounting Policies [Line Items]        
Cost of revenues [1] 10,322,000,000 8,435,000,000 16,439,000,000  
Reimbursements | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Avendra LLC        
Significant Accounting Policies [Line Items]        
Cost of revenues 56,000,000 62,000,000 118,000,000  
Cost of revenues, net of tax 42,000,000 46,000,000 $ 87,000,000  
Costs Incurred to Fulfill Contracts        
Significant Accounting Policies [Line Items]        
Capitalized costs $ 368,000,000 $ 366,000,000    
[1] See Note 15 for disclosure of related party amounts.