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Restructuring Programs (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Restructuring reserve [Roll Forward]      
Balance at beginning of period $ 82 $ 70 $ 95
Restructuring provision 48 116 161
Reversals of prior charges (21) (29) (34)
Net Current Period Charges 27 87 127
Charges against reserve and currency (82) (75) (152)
Balance at end of period 27 82 70
Reconciliation to the Condensed Consolidated Statements of Cash Flows [Abstract]      
Charges against reserve and currency (82) (75) (152)
Asset impairments 13 0 56
Effects of foreign currency and other non-cash items (3) (6) 3
Payments for restructurings (72) (81) (93)
Land      
Restructuring reserve [Roll Forward]      
Gain on sale of surplus land 4    
Severance and Related Costs      
Restructuring reserve [Roll Forward]      
Balance at beginning of period 78 66 94
Restructuring provision 30 107 81
Reversals of prior charges (13) (21) (24)
Net Current Period Charges 17 86 57
Charges against reserve and currency (70) (74) (85)
Balance at end of period 25 78 66
Reconciliation to the Condensed Consolidated Statements of Cash Flows [Abstract]      
Charges against reserve and currency (70) (74) (85)
Other Contractual Termination Costs      
Restructuring reserve [Roll Forward]      
Balance at beginning of period 4 4 1
Restructuring provision 3 3 19
Reversals of prior charges (6) (2) (5)
Net Current Period Charges (3) 1 14
Charges against reserve and currency 1 (1) (11)
Balance at end of period 2 4 4
Reconciliation to the Condensed Consolidated Statements of Cash Flows [Abstract]      
Charges against reserve and currency 1 (1) (11)
Asset Impairments      
Restructuring reserve [Roll Forward]      
Balance at beginning of period 0 0 0
Restructuring provision 15 6 61
Reversals of prior charges (2) (6) (5)
Net Current Period Charges 13 0 56
Charges against reserve and currency (13) 0 (56)
Balance at end of period 0 0 0
Write-off of leased right-of-use assets 3 4 39
Write-off of owned assets 12 2 22
Reconciliation to the Condensed Consolidated Statements of Cash Flows [Abstract]      
Charges against reserve and currency $ (13) $ 0 $ (56)