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Working Capital Detail (Tables)
 12 Months Ended
Dec. 31, 2021
Disclosure Components Of Working Capital Detail [Abstract]  
Components of Working Capital Detail Working Capital Detail
($ in millions)20212020
Receivables  
 Trade - net$2,687 $2,412 
 Other - net465 314 
 Total$3,152 $2,726 
Inventories(1)
 Finished products$1,175 $1,021 
 Work in process234 187 
 Raw materials723 490 
 Supplies39 37 
 Total$2,171 $1,735 
Accounts payable and accrued liabilities
 Trade $2,734 $2,259 
 Accrued payroll534 505 
 Customer rebates368 320 
 Other postretirement and pension benefits87 85 
 Income taxes36 46 
 Other633 577 
 Total$4,392 $3,792 
(1)Inventories valued using the LIFO method of inventory valuation comprised 29% and 33% of total gross inventory values as of December 31, 2021 and 2020, respectively. If the FIFO method of inventory valuation had been used, inventories would have been $174 million and $110 million higher as of December 31, 2021 and 2020, respectively.