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Financial Instruments - Schedule of Effect of Risk Management (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Cash flow hedges: |  |  |  |
Total | $ (698.7) | $ 36.9 | $ (696.5) | $ 125.7
Hedged Fixed Rate Debt |  |  |  |
Cash flow hedges: |  |  |  |
Effective portion of risk-management instruments that was recognized in other comprehensive income (loss) | (484.6) | 42.0 | (688.2) | 173.8
Cross-currency interest rate swaps |  |  |  |
Cash flow hedges: |  |  |  |
Effective portion of risk-management instruments that was recognized in other comprehensive income (loss) | (1.3) | 2.3 | (10.5) | 19.3
Effective portion of risk-management instruments that was recognized in other comprehensive income (loss) | 2.6 | 1.9 | (4.1) | 15.6
Foreign Exchange Contract |  |  |  |
Cash flow hedges: |  |  |  |
Effective portion of risk-management instruments that was recognized in other comprehensive income (loss) | (965.4) | 32.7 | (1,292.7) | 131.8
Forward-starting interest rate swaps |  |  |  |
Cash flow hedges: |  |  |  |
Effective portion of risk-management instruments that was recognized in other comprehensive income (loss) | 0.0 | 0.0 | (24.8) | 77.4
Designated as Hedging Instrument | Hedged Fixed Rate Debt |  |  |  |
Fair value hedges: |  |  |  |
Effect from hedged fixed-rate debt | 15.8 | (2.3) | 55.4 | (19.0)
Designated as Hedging Instrument | Interest Rate Contracts |  |  |  |
Fair value hedges: |  |  |  |
Effect from interest rate contracts | (15.8) | 2.3 | (55.4) | 19.0
Cash flow hedges: |  |  |  |
Effective portion of losses on interest rate contracts reclassified from accumulated other comprehensive loss | 1.4 | 2.0 | 2.8 | 4.4
Designated as Hedging Instrument | Cross-currency interest rate swaps |  |  |  |
Cash flow hedges: |  |  |  |
Effective portion of losses on interest rate contracts reclassified from accumulated other comprehensive loss | (48.9) | 3.3 | (60.6) | 87.3
Not Designated as Hedging Instrument | Foreign Exchange Contract |  |  |  |
Cash flow hedges: |  |  |  |
Net (gains) losses on foreign currency exchange contracts not designated as hedging instruments | $ (651.2) | $ 31.6 | $ (638.7) | $ 34.0

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- Definition Amount of gain (loss) from the increase (decrease) in fair value of derivative and nonderivative instruments designated as fair value hedging instruments recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147476148/220-40-50-21 + Details
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- Definition Amount of the increase (decrease) in fair value of the hedged item in a fair value hedge recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4C -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4C Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 182 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480401/815-10-55-182 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147476148/220-40-50-21 + Details
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