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Income Taxes (Reconciliation of Federal to Effective Taxes) (Schedule) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Accrued Income Taxes [Abstract] |  |
Computed “expected” tax benefit (expense) | $ (306.1) | $ (192.1)
Non-deductible or non-taxable foreign currency exchange results | 119.7 | 153.6
Change in valuation allowances | 34.5 | (88.7)
International rate differences | (23.9) | (16.1)
Recognition of previously unrecognized tax benefits | 20.5 | 0.0
Non-deductible or non-taxable interest and other items | (15.7) | (20.4)
Tax benefit associated with technology innovation | 5.8 | 44.8
Enacted tax law and rate changes | (0.3) | 36.1
Basis and other differences in the treatment of items associated with investments in subsidiaries and affiliates | 0.2 | 3.1
Other, net | (5.2) | (0.4)
Total income tax expense | $ (170.5) | $ (80.1)

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