XML 29 R14.htm IDEA: XBRL DOCUMENT v3.24.1.u1
Accumulated Other Comprehensive Loss
 3 Months Ended
Mar. 31, 2024
Equity [Abstract]  
Accumulated Other Comprehensive Loss Accumulated Other Comprehensive Loss
The changes in the cumulative balances of “Accumulated other comprehensive loss” reported in the Consolidated Balance Sheets consisted of the following:
Balance at
Beginning
of Year		Net IncomeReclassification
Adjustments		Balance at
End of Period
 ($ in millions)
Three months ended March 31, 2024     
Pensions and other postretirement liabilities$(292)$— $(2)$(294)
Other comprehensive loss of equity investees(28)— —  (28)
Accumulated other comprehensive loss$(320)$— $(2) $(322)
Three months ended March 31, 2023     
Pensions and other postretirement liabilities$(319)$— $(4)$(323)
Other comprehensive loss of equity investees(32)— —  (32)
Accumulated other comprehensive loss$(351)$— $(4) $(355)