v3.25.1
Analysis of accumulated other comprehensive (loss) income (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 29, 2025
Mar. 30, 2024
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Beginning balance $ 3,340.3 $ 3,543.9
Other comprehensive (loss) income, net of tax, attributable to parent 39.5 (40.4)
Other comprehensive income (loss) 36.4 (50.4)
Ending balance 3,427.9 3,495.4
Accumulated OCI    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Beginning balance (1,174.7) (906.9)
Ending balance (1,138.3) (957.3)
Accumulated OCI attributable to shareholders    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Beginning balance (1,077.2) (828.5)
Other comprehensive (loss) income, net of tax, attributable to parent 31.5 (37.4)
Other comprehensive income (loss) 31.5 (37.4)
Ending balance (1,045.7) (865.9)
Post- retirement benefit    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Beginning balance (23.2) (15.3)
Other comprehensive (loss) income, net of tax, attributable to parent (1.6) (0.3)
Other comprehensive income (loss) (0.2) (0.4)
Ending balance (24.8) (15.6)
Foreign currency translation    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Other comprehensive (loss) income, net of tax, attributable to parent (1.4) 0.1
Post-retirement benefit movements    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Other comprehensive (loss) income, net of tax, attributable to parent (0.2) (0.4)
Cumulative translation adjustment    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Beginning balance (1,056.8) (832.3)
Other comprehensive (loss) income, net of tax, attributable to parent 40.9 (40.5)
Other comprehensive (loss) income, net of tax, attributable to noncontrolling interest 4.9 (13.0)
Other comprehensive income (loss) 44.4 (53.4)
Ending balance (1,015.9) (872.8)
Cash flow hedges    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Beginning balance 2.8 19.1
Other comprehensive (loss) income, net of tax, attributable to parent (7.8) 3.4
Ending balance (5.0) 22.5
Non- controlling interests    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Beginning balance (97.5) (78.4)
Other comprehensive (loss) income, net of tax, attributable to noncontrolling interest 4.9 (13.0)
Ending balance $ (92.6) $ (91.4)