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Financial Instruments (Schedule of Effect of Risk Management) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Cash flow hedges: |  |  |
Total | $ (209.7) | $ 60.7 | $ 114.8
Hedged Fixed Rate Debt |  |  |
Cash flow hedges: |  |  |
Effective portion of risk-management instruments that was recognized in other comprehensive income (loss) | (404.0) | 40.1 |
Foreign currency exchange contracts |  |  |
Cash flow hedges: |  |  |
Effective portion of risk-management instruments that was recognized in other comprehensive income (loss) | 0.0 | 0.0 |
Forward-starting interest rate swaps |  |  |
Cash flow hedges: |  |  |
Effective portion of risk-management instruments that was recognized in other comprehensive income (loss) | (110.9) | 31.6 |
Cross-currency interest rate swaps |  |  |
Cash flow hedges: |  |  |
Effective portion of risk-management instruments that was recognized in other comprehensive income (loss) | (207.9) | 47.4 |
Effective portion of risk-management instruments that was recognized in other comprehensive income (loss) | (53.7) | (8.3) |
Net investment hedges | Hedged Fixed Rate Debt |  |  |
Cash flow hedges: |  |  |
Effective portion of risk-management instruments that was recognized in other comprehensive income (loss) |  |  | 110.4
Net investment hedges | Foreign currency exchange contracts |  |  |
Cash flow hedges: |  |  |
Effective portion of risk-management instruments that was recognized in other comprehensive income (loss) |  |  | 5.7
Net investment hedges | Cross-currency interest rate swaps |  |  |
Cash flow hedges: |  |  |
Effective portion of risk-management instruments that was recognized in other comprehensive income (loss) |  |  | 96.8
Cash flow hedges | Forward-starting interest rate swaps |  |  |
Cash flow hedges: |  |  |
Effective portion of risk-management instruments that was recognized in other comprehensive income (loss) |  |  | 0.0
Cash flow hedges | Cross-currency interest rate swaps |  |  |
Cash flow hedges: |  |  |
Effective portion of risk-management instruments that was recognized in other comprehensive income (loss) |  |  | 0.0
Designated as Hedging Instrument | Hedged Fixed Rate Debt |  |  |
Fair value hedges: |  |  |
Effect from hedged fixed-rate debt | 86.9 | 112.1 | (40.9)
Designated as Hedging Instrument | Interest Rate Contract |  |  |
Fair value hedges: |  |  |
Effect from interest rate contracts | (86.9) | (112.1) | 40.9
Cash flow hedges: |  |  |
Effective portion of losses on interest rate contracts reclassified from accumulated other comprehensive loss | 16.4 | 15.9 |
Effective portion of losses on interest rate contracts reclassified from accumulated other comprehensive loss |  |  | 14.8
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 | (102.4) | (17.1) |
Effective portion of losses on interest rate contracts reclassified from accumulated other comprehensive loss |  |  | 0.0
Not Designated as Hedging Instrument | Foreign currency exchange contracts |  |  |
Cash flow hedges: |  |  |
Net (gains) losses on foreign currency exchange contracts not designated as hedging instruments | $ (123.7) | $ 61.9 | $ 100.0

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