Financial Instruments (Narrative) (Details) $ in Millions	12 Months Ended
Dec. 31, 2022 USD ($) T lb	Dec. 31, 2021 USD ($) T	Dec. 31, 2020 USD ($)
Interest Expense	$ 223.5	$ 233.7	$ 248.7
Accumulated other comprehensive income (loss), derivatives qualifying as hedges, net of tax	$ (766.2)	(637.6)	(631.5)
Approximate maximum term of currency derivatives, in months	12 months
Repayments of Long-term Debt	$ 9.6	432.5	307.5
Amount expected to be reclassified into interest expense over the next twelve months	0.3
Price Risk Cash Flow Hedge Unrealized Gain (Loss) to be Reclassified During Next 12 Months	$ 4.9
Maximum Length of Time Hedged in Price Risk Cash Flow Hedge	12 months
Interest rate contracts outstanding	$ 0.0	$ 0.0
Aluminum
Derivative, Nonmonetary Notional Amount \| T	23,088,000,000	16,488,000,000
Copper
Derivative, Nonmonetary Notional Amount	6,241,625,000,000	4,035,000,000,000
Foreign Exchange Contract [Member]
Derivative, Notional Amount	$ 350.0	$ 500.0
Currency derivatives expected to be reclassified into earnings over the next twelve months	0.3
Interest Rate Swap [Member]
Derivative, Notional Amount	1,250.0
Deferred losses remaining in AOCI related to the interest rate locks	4.0	4.7
Designated as Hedging Instrument [Member]
Deferred losses remaining in AOCI related to the interest rate locks	0.0	0.0	0.0
Designated as Hedging Instrument [Member] \| Foreign Exchange Contract [Member]
Accumulated other comprehensive income (loss), derivatives qualifying as hedges, net of tax	0.3	(2.2)
Designated as Hedging Instrument [Member] \| Commodity Contract
Accumulated other comprehensive income (loss), derivatives qualifying as hedges, net of tax	4.9	3.5
Interest Expense [Member] \| Designated as Hedging Instrument [Member]
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	0.7	0.7	0.7
Cost of Sales \| Designated as Hedging Instrument [Member]
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	(9.2)	3.7	(2.6)
Gain (Loss) on Foreign Currency Cash Flow Hedge Ineffectiveness	$ 0.6	$ 0.7	$ 2.1

Interest rate contracts outstanding

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