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Borrowings (Summary of Long-term Notes) (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020 | Aug. 31, 2020 | May 31, 2020 | Nov. 30, 2019 | Feb. 28, 2019
--- | --- | --- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |  |  |
Unamortized note discounts | $ (105.2) | $ (76.7) |  |  |  |
Total long-term notes | $ 16,741.2 | 16,348.7 |  |  |  |
Senior Notes | 2.35% notes due 2022 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 2.35% |  |  |  |  |
Long-term notes, gross | $ 750.0 | 750.0 |  |  |  |
Senior Notes | 3.00% notes due 2022 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 3.00% |  |  |  |  |
Long-term notes, gross | $ 99.2 | 99.2 |  |  |  |
Senior Notes | 1.00% euro denominated notes due 2022 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 1.00% |  |  |  |  |
Long-term notes, gross | $ 678.2 | 737.9 |  |  |  |
Senior Notes | 0.15% Swiss franc denominated notes due 2024 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 0.15% |  |  |  |  |
Long-term notes, gross | $ 654.7 | 679.7 |  |  |  |
Senior Notes | 7.125% notes due 2025 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 7.125% |  |  |  |  |
Long-term notes, gross | $ 217.5 | 229.7 |  |  |  |
Senior Notes | 2.75% notes due 2025 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 2.75% |  |  |  |  |
Long-term notes, gross | $ 560.6 | 560.6 |  |  |  |
Senior Notes | 1.625% euro denominated notes due 2026 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 1.625% |  |  |  |  |
Long-term notes, gross | $ 847.7 | 922.4 |  |  |  |
Senior Notes | 5.5% notes due 2027 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 5.50% |  |  |  |  |
Long-term notes, gross | $ 364.3 | 377.5 |  |  |  |
Senior Notes | 3.1% notes due 2027 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 3.10% |  |  |  |  |
Long-term notes, gross | $ 401.5 | 401.5 |  |  |  |
Senior Notes | 0.45% Swiss franc denominated notes due 2028 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 0.45% |  |  |  |  |
Long-term notes, gross | $ 436.4 | 453.2 |  |  |  |
Senior Notes | 3.375% notes due 2029 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 3.375% |  |  |  |  | 3.375%
Long-term notes, gross | $ 930.6 | 1,150.0 |  |  |  |
Senior Notes | 0.42% Japanese yen denominated notes due 2029 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 0.42% |  |  |  | 0.42% |
Long-term notes, gross | $ 199.0 | 222.4 |  |  |  |
Senior Notes | 2.125% euro denominated notes due 2030 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 2.125% |  |  |  |  |
Long-term notes, gross | $ 847.7 | 922.4 |  |  |  |
Senior Notes | 0.625% euro denominated notes due 2031 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 0.625% |  |  |  | 0.625% |
Long-term notes, gross | $ 678.2 | 737.9 |  |  |  |
Senior Notes | 0.50% euro denominated notes due 2033 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 0.50% |  |  |  |  |
Long-term notes, gross | $ 678.2 | 0.0 |  |  |  |
Senior Notes | 0.56% Japanese yen denominated notes due 2034 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 0.56% |  |  |  | 0.56% |
Long-term notes, gross | $ 80.5 | 90.0 |  |  |  |
Senior Notes | 6.77% notes due 2036 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 6.77% |  |  |  |  |
Long-term notes, gross | $ 158.6 | 174.4 |  |  |  |
Senior Notes | 5.55% notes due 2037 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 5.55% |  |  |  |  |
Long-term notes, gross | $ 444.7 | 476.2 |  |  |  |
Senior Notes | 5.95% notes due 2037 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 5.95% |  |  |  |  |
Long-term notes, gross | $ 266.8 | 284.1 |  |  |  |
Senior Notes | 3.875% notes due 2039 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 3.875% |  |  |  |  | 3.875%
Long-term notes, gross | $ 240.3 | 360.7 |  |  |  |
Senior Notes | 1.625% Notes due 2043 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 1.625% |  |  |  |  |
Long-term notes, gross | $ 337.1 | 0.0 |  |  |  |
Senior Notes | 4.65% notes due 2044 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 4.65% |  |  |  |  |
Long-term notes, gross | $ 38.3 | 43.0 |  |  |  |
Senior Notes | 3.7% notes due 2045 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 3.70% |  |  |  |  |
Long-term notes, gross | $ 386.8 | 412.5 |  |  |  |
Senior Notes | 3.95% notes due 2047 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 3.95% |  |  |  |  |
Long-term notes, gross | $ 347.0 | 436.1 |  |  |  |
Senior Notes | 3.95% notes due 2049 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 3.95% |  |  |  |  | 3.95%
Long-term notes, gross | $ 958.2 | 1,500.0 |  |  |  |
Senior Notes | 1.70% euro denominated notes due 2049 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 1.70% |  |  |  | 1.70% |
Long-term notes, gross | $ 1,130.3 | 1,229.9 |  |  |  |
Senior Notes | 0.97% Japanese yen denominated notes due 2049 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 0.97% |  |  |  | 97.00% |
Long-term notes, gross | $ 66.3 | 74.1 |  |  |  |
Senior Notes | 2.25% notes due 2050 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 2.25% |  | 2.25% | 2.25% |  |
Long-term notes, gross | $ 1,250.0 | 1,250.0 |  |  |  |
Senior Notes | 1.125% euro denominated notes due 2051 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 1.125% |  |  |  |  |
Long-term notes, gross | $ 565.2 | 0.0 |  |  |  |
Senior Notes | 4.15% notes due 2059 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 4.15% |  |  |  |  | 4.15%
Long-term notes, gross | $ 591.3 | 1,000.0 |  |  |  |
Senior Notes | 2.50% notes due 2060 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 2.50% |  | 2.50% |  |  |
Long-term notes, gross | $ 850.0 | 850.0 |  |  |  |
Senior Notes | 1.375% euro denominated notes due 2061 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 1.375% |  |  |  |  |
Long-term notes, gross | $ 791.2 | $ 0.0 |  |  |  |

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