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Leases (Tables)
12 Months Ended
Dec. 31, 2023
Leases [Abstract]  
Schedule of Lease Related Assets and Liabilities
Operating lease amounts included on the Consolidated Balance Sheets are as follows:

December 31,
20232022
($ in millions)
Classification
Assets
Right-of-use (ROU) assetsOther assets$390 $407 
Liabilities
Current lease liabilitiesOther current liabilities$105 $94 
Non-current lease liabilitiesOther liabilities287 316 
Total lease liabilities$392 $410 
Lease, Cost
The components of total lease expense, primarily included in “Purchased services and rents,” are as follows:

202320222021
($ in millions)
Operating lease expense$115 $101 $106 
Variable lease expense84 55 44 
Short-term lease expense15 18 
Total lease expense$214 $174 $159 
Other information related to operating leases is as follows:
December 31,
20232022
Weighted-average remaining lease term (years) on operating leases6.126.67
Weighted-average discount rates on operating leases3.78 %3.16 %
Lessee, Operating Lease, Liability, Maturity
Future minimum lease payments under non-cancellable operating leases are as follows:
December 31, 2023
($ in millions)
2024$116 
2025105 
202685 
202742 
202830 
2029 and subsequent years66 
Total lease payments444 
Less: Interest52 
Present value of lease liabilities$392 
December 31, 2022
($ in millions)
2023$103 
202495 
202587 
202669 
202727 
2028 and subsequent years81 
Total lease payments462 
Less: Interest52 
Present value of lease liabilities$410