Derivative Instruments and Hedging Activities - Fair Value Balance Sheet (Details) $ in Millions, $ in Millions	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)	Jun. 30, 2023 CAD ($)	Jun. 30, 2023 USD ($)
Designated as hedging instruments
Derivatives designated as hedging instruments
Derivative asset, fair value, designated as hedging instrument	$ 78.3	$ 42.7
Derivative liability, fair value, designated as hedging instrument	(0.1)	(2.5)
Not designated as hedging instruments
Derivatives not designated as hedging instruments
Derivative asset, not designated as hedging instrument, fair value	24.5	17.9
Derivative liability, not designated as hedging instrument, fair value	(25.1)	(48.3)
Forward starting interest rate swaps | Designated as hedging instruments | Cash flow hedges
Derivatives designated as hedging instruments
Notional amount	1,000.0	1,000.0
Derivatives not designated as hedging instruments
Notional amount	1,000.0	1,000.0
Foreign currency forwards | Designated as hedging instruments | Cash flow hedges
Derivatives designated as hedging instruments
Notional amount	270.9	219.4
Derivatives not designated as hedging instruments
Notional amount	270.9	219.4
Foreign currency forwards | Not designated as hedging instruments
Derivatives designated as hedging instruments
Notional amount			$ 260	$ 195.0
Derivatives not designated as hedging instruments
Notional amount			$ 260	$ 195.0
Commodity swaps | Not designated as hedging instruments
Derivatives designated as hedging instruments
Notional amount	602.0	653.5
Derivatives not designated as hedging instruments
Notional amount	602.0	653.5
Commodity options | Not designated as hedging instruments
Derivatives designated as hedging instruments
Notional amount	21.7	21.7
Derivatives not designated as hedging instruments
Notional amount	21.7	21.7
Other non-current assets | Forward starting interest rate swaps | Designated as hedging instruments
Derivatives designated as hedging instruments
Derivative asset, fair value, designated as hedging instrument	75.0	41.6
Other non-current assets | Foreign currency forwards | Designated as hedging instruments
Derivatives designated as hedging instruments
Derivative asset, fair value, designated as hedging instrument	0.7	0.0
Other non-current assets | Commodity swaps | Not designated as hedging instruments
Derivatives not designated as hedging instruments
Derivative asset, not designated as hedging instrument, fair value	7.5	6.6
Other current assets | Foreign currency forwards | Designated as hedging instruments
Derivatives designated as hedging instruments
Derivative asset, fair value, designated as hedging instrument	2.6	1.1
Other current assets | Commodity swaps | Not designated as hedging instruments
Derivatives not designated as hedging instruments
Derivative asset, not designated as hedging instrument, fair value	16.8	11.1
Other current assets | Commodity options | Not designated as hedging instruments
Derivatives not designated as hedging instruments
Derivative asset, not designated as hedging instrument, fair value	0.2	0.2
Other liabilities | Forward starting interest rate swaps | Designated as hedging instruments
Derivatives designated as hedging instruments
Derivative liability, fair value, designated as hedging instrument	0.0	0.0
Other liabilities | Foreign currency forwards | Designated as hedging instruments
Derivatives designated as hedging instruments
Derivative liability, fair value, designated as hedging instrument	(0.1)	(1.3)
Other liabilities | Commodity swaps | Not designated as hedging instruments
Derivatives not designated as hedging instruments
Derivative liability, not designated as hedging instrument, fair value	(2.5)	(6.1)
Accounts payable and other current liabilities | Foreign currency forwards | Designated as hedging instruments
Derivatives designated as hedging instruments
Derivative liability, fair value, designated as hedging instrument	0.0	(1.2)
Accounts payable and other current liabilities | Commodity swaps | Not designated as hedging instruments
Derivatives not designated as hedging instruments
Derivative liability, not designated as hedging instrument, fair value	(22.4)	(42.0)
Accounts payable and other current liabilities | Commodity options | Not designated as hedging instruments
Derivatives not designated as hedging instruments
Derivative liability, not designated as hedging instrument, fair value	$ (0.2)	$ (0.2)