v3.25.2
Accumulated Other Comprehensive Income/Loss (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Net year-to-date other comprehensive income/(loss), taxes $ (1.7) $ (0.0) $ (1.9) $ (0.1)
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance 16,039.0 15,665.0 16,890.0 14,788.0
Other comprehensive income/(loss) before reclassifications 28.0 4.0 31.0 9.0
Amounts reclassified from accumulated other comprehensive income/(loss) 0.0 0.0 0.0 (1.0)
Total other comprehensive income/(loss) 28.0 [1] 4.0 [1] 31.0 [2] 8.0 [2]
Ending balance 16,258.0 16,489.0 16,258.0 16,489.0
Total        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance [3] (720.0) (610.0) (723.0) (614.0)
Total other comprehensive income/(loss) [3] 28.0 4.0 31.0 8.0
Ending balance [3] (692.0) (606.0) (692.0) (606.0)
Defined benefit plans        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance (495.0) (483.0) (498.0) (484.0)
Other comprehensive income/(loss) before reclassifications (2.0) 0.0 1.0 2.0
Amounts reclassified from accumulated other comprehensive income/(loss) 0.0 0.0 0.0 (1.0)
Total other comprehensive income/(loss) (2.0) 0.0 1.0 1.0
Ending balance (497.0) (483.0) (497.0) (483.0)
Foreign currency translation        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance (241.0) (143.0) (241.0) (146.0)
Other comprehensive income/(loss) before reclassifications 30.0 4.0 30.0 7.0
Amounts reclassified from accumulated other comprehensive income/(loss) 0.0 0.0 0.0 0.0
Total other comprehensive income/(loss) 30.0 4.0 30.0 7.0
Ending balance (211.0) (139.0) (211.0) (139.0)
Unrealized gain on derivative instruments        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance 16.0 16.0 16.0 16.0
Other comprehensive income/(loss) before reclassifications 0.0 0.0 0.0 0.0
Amounts reclassified from accumulated other comprehensive income/(loss) 0.0 0.0 0.0 0.0
Total other comprehensive income/(loss) 0.0 0.0 0.0 0.0
Ending balance $ 16.0 $ 16.0 $ 16.0 $ 16.0
[1] Net of deferred taxes of ($1.7) million and $0.0 million during the three months ended June 30, 2025 and 2024, respectively.
[2] Net of deferred taxes of ($1.9) million and ($0.1) million during the six months ended June 30, 2025 and 2024, respectively.
[3] AOCI = accumulated other comprehensive income/loss (Note 9)