Annual report pursuant to Section 13 and 15(d)

SUMMARY OF ACCOUNTING POLICIES - Additional Information (Detail)

v3.20.4
SUMMARY OF ACCOUNTING POLICIES - Additional Information (Detail) - USD ($)
 3 Months Ended 12 Months Ended
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Jan. 01, 2019
Jan. 01, 2018
Significant Accounting Policies [Line Items]                          
Investments and Restricted Cash $ 25,000,000       $ 24,000,000       $ 25,000,000 $ 24,000,000      
Allowance for doubtful account 138,000,000       93,000,000       138,000,000 93,000,000      
Provision for doubtful accounts expense                 254,000,000 194,000,000      
Inventories 620,000,000       511,000,000       620,000,000 511,000,000      
Capitalized interest                 $ 87,000,000 91,000,000      
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                 $ 9,000,000 (6,000,000) $ (19,000,000)    
Income tax benefit                 (501,000,000) (1,212,000,000) (1,228,000,000)    
Decrease in other financing activities                 4,517,000,000 1,727,000,000 5,692,000,000    
Increase in operating activities                 10,459,000,000 8,639,000,000 12,711,000,000    
Revenues (24,896,000,000) $ (21,238,000,000) $ (20,459,000,000) $ (18,035,000,000) (20,568,000,000) $ (18,318,000,000) $ (18,048,000,000) $ (17,160,000,000) (84,628,000,000) (74,094,000,000) (71,861,000,000)    
Costs and Expenses                 76,944,000,000 66,296,000,000 64,837,000,000    
Net Income (3,347,000,000) $ 1,957,000,000 $ 1,768,000,000 $ 965,000,000 (106,000,000) $ 1,750,000,000 $ 1,685,000,000 $ 1,111,000,000 1,343,000,000 4,440,000,000 4,791,000,000    
Operating Lease, Right-of-Use Asset 3,073,000,000       2,856,000,000       3,073,000,000 2,856,000,000   $ 2,700,000,000  
Operating lease liability 3,100,000,000       2,929,000,000       3,100,000,000 2,929,000,000   $ 2,700,000,000  
Increase (decrease) in allowance for expected credit losses                 45,000,000        
Goodwill impairment charge                 494,000,000 0 0    
Retained earnings 6,896,000,000       9,105,000,000       6,896,000,000 9,105,000,000      
Decrease to AOCI 7,113,000,000       5,997,000,000       7,113,000,000 5,997,000,000 $ 4,994,000,000    
Supply Chain & Freight                          
Significant Accounting Policies [Line Items]                          
Goodwill impairment charge                 494,000,000        
Licenses                          
Significant Accounting Policies [Line Items]                          
Indefinite-lived intangible assets 5,000,000               5,000,000        
Trade Names                          
Significant Accounting Policies [Line Items]                          
Indefinite-lived intangible assets 200,000,000               200,000,000        
Self Insurance Assumptions                          
Significant Accounting Policies [Line Items]                          
Costs and Expenses                 (94,000,000)        
Net Income                 $ 72,000,000        
Earnings Per Share, Basic and Diluted                 $ 0.08        
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                 5 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                 10 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 | 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                 10 years        
cash held in escrow [Member]                          
Significant Accounting Policies [Line Items]                          
Restricted Cash and Cash Equivalents, Noncurrent $ 2,000,000       $ 3,000,000       $ 2,000,000 $ 3,000,000      
Adjustments                          
Significant Accounting Policies [Line Items]                          
Retained earnings                         $ 735,000,000
Decrease to AOCI                         $ 735,000,000