Annual report pursuant to Section 13 and 15(d)

SUMMARY OF ACCOUNTING POLICIES - Additional Information (Detail)

v3.19.3.a.u2
SUMMARY OF ACCOUNTING POLICIES - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Jan. 01, 2019
Jan. 01, 2018
Significant Accounting Policies [Line Items]                            
Investments and Restricted Cash $ 24       $ 170         $ 24 $ 170      
Provision for doubtful accounts expense                   194 118      
Inventories 511       421         511 421      
Capitalized interest                   $ 91 97      
Net actuarial gains or losses in excess of market-related value of plan assets or the plans' projected benefit obligations                   10.00%        
Net currency transaction gains and (losses), pre-tax                   $ (6) (19) $ 3    
Income tax benefit                   (1,212) (1,228) (2,232)    
Decrease in other financing activities                   1,727 5,692 (3,287)    
Increase in operating activities                   8,639 12,711 1,479    
Operating lease, future minimal payments         2,967           2,967      
Revenues (20,568) $ (18,318) $ (18,048) $ (17,160) (19,848) $ (17,444) $ (17,456) $ (17,113)   (74,094) (71,861) (66,585)    
Costs and Expenses                   66,296 64,837 59,056    
Retained earnings 9,105       8,006         9,105 8,006      
Decrease to AOCI 5,997       4,994         5,997 4,994 4,867    
Net Income (106) $ 1,750 $ 1,685 $ 1,111 453 $ 1,508 $ 1,485 $ 1,345   $ 4,440 4,791 4,905    
Nominal vesting period                   3 years        
Operating Lease, Right-of-Use Asset 2,856                 $ 2,856     $ 2,650  
Operating lease liability 2,929                 2,929     $ 2,700  
Licenses                            
Significant Accounting Policies [Line Items]                            
Indefinite-lived intangible assets 4                 4        
Trade Names                            
Significant Accounting Policies [Line Items]                            
Indefinite-lived intangible assets 200                 200        
Self Insurance Assumptions                            
Significant Accounting Policies [Line Items]                            
Costs and Expenses                   (94)        
Net Income                   $ 72        
Earnings Per Share, Basic and Diluted                   $ 0.08        
Minimum                            
Significant Accounting Policies [Line Items]                            
Employee share-based awards, Vesting Period                   1 year        
Minimum | Other Intangible Assets                            
Significant Accounting Policies [Line Items]                            
Finite-lived intangible assets, estimated useful lives range, Minimum                   2 years        
Minimum | Capitalized software                            
Significant Accounting Policies [Line Items]                            
Finite-lived intangible assets, estimated useful lives range, Minimum                   7 years        
Minimum | Vehicles                            
Significant Accounting Policies [Line Items]                            
Property, plant and equipment, estimated useful lives range                   6 years        
Minimum | Aircraft                            
Significant Accounting Policies [Line Items]                            
Property, plant and equipment, estimated useful lives range                   12 years        
Minimum | Buildings                            
Significant Accounting Policies [Line Items]                            
Property, plant and equipment, estimated useful lives range                   20 years        
Minimum | Plant Equipment                            
Significant Accounting Policies [Line Items]                            
Property, plant and equipment, estimated useful lives range                   3 years        
Minimum | Technology equipment                            
Significant Accounting Policies [Line Items]                            
Property, plant and equipment, estimated useful lives range                   3 years        
Maximum                            
Significant Accounting Policies [Line Items]                            
Employee share-based awards, Vesting Period                   5 years        
Maximum | Other Intangible Assets                            
Significant Accounting Policies [Line Items]                            
Finite-lived intangible assets, estimated useful lives range, Minimum                   22 years        
Maximum | Vehicles                            
Significant Accounting Policies [Line Items]                            
Property, plant and equipment, estimated useful lives range                 15 years          
Maximum | Aircraft                            
Significant Accounting Policies [Line Items]                            
Property, plant and equipment, estimated useful lives range                   40 years        
Maximum | Buildings                            
Significant Accounting Policies [Line Items]                            
Property, plant and equipment, estimated useful lives range                   40 years        
Maximum | Plant Equipment                            
Significant Accounting Policies [Line Items]                            
Property, plant and equipment, estimated useful lives range                   20 years        
Maximum | Technology equipment                            
Significant Accounting Policies [Line Items]                            
Property, plant and equipment, estimated useful lives range                   5 years        
Self-insurance requirements [Member]                            
Significant Accounting Policies [Line Items]                            
Investments and Restricted Cash 0       142         $ 0 142      
cash held in escrow [Member]                            
Significant Accounting Policies [Line Items]                            
Restricted Cash and Cash Equivalents, Noncurrent $ 3       $ 9         3 9      
Adjustments                            
Significant Accounting Policies [Line Items]                            
Income tax benefit                       $ 71    
Adjustments                            
Significant Accounting Policies [Line Items]                            
Retained earnings                           $ 735
Decrease to AOCI                           $ 735
Net Income                   $ (120) $ 23      
Earnings Per Share, Basic and Diluted                   $ (0.14) $ 0.03