v3.25.2
Other Comprehensive Income (Loss)
 6 Months Ended
Jun. 30, 2025
Stockholders' Equity Note [Abstract]  
Other Comprehensive Income (Loss)
Changes in accumulated other comprehensive loss, net of tax:
Three Months Ended June 30, 2025Three Months Ended June 30, 2024
(Millions of Dollars)Gains and Losses on Cash Flow HedgesDefined Benefit Pension and Postretirement ItemsTotalGains and Losses on Cash Flow HedgesDefined Benefit Pension and Postretirement ItemsTotal
Accumulated other comprehensive loss at April 1$(8)$(2)$(10)$(6)$(2)$(8)
Gains reclassified from net accumulated other comprehensive income:
Other comprehensive gain before reclassifications
6 — 6 — — — 
Net current period other comprehensive income6 — 6 — — — 
Accumulated other comprehensive loss at June 30$(2)$(2)$(4)$(6)$(2)$(8)
Six Months Ended June 30, 2025Six Months Ended June 30, 2024
(Millions of Dollars)Gains and Losses on Cash Flow HedgesDefined Benefit Pension and Postretirement ItemsTotalGains and Losses on Cash Flow HedgesDefined Benefit Pension and Postretirement ItemsTotal
Accumulated other comprehensive loss at Jan. 1$(6)$(2)$(8)$(18)$(2)$(20)
Gains reclassified from net accumulated other comprehensive income:
Other comprehensive gain before reclassifications4 — 4 12 — 12 
Net current period other comprehensive income4 — 4 12 — 12 
Accumulated other comprehensive loss at June 30$(2)$(2)$(4)$(6)$(2)$(8)