v3.8.0.1

Financing Components of Debt (Details) - USD ($) | Dec. 31, 2017 | Dec. 31, 2016 | Jun. 20, 2016 | Jun. 16, 2016
--- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |
Long-term borrowings, carrying value | $ 4,056,200,000 | $ 3,358,000,000 |  |
Commercial Paper [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term borrowings, carrying value | 948,600,000 |  |  |
US Dollar-Denominated Commercial Paper [Member] | Commercial Paper [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term borrowings, carrying value | 665,100,000 | 347,900,000 |  |
Euro Denominated Commercial Paper [Member] | Commercial Paper [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term borrowings, carrying value | 282,700,000 | 26,800,000 |  |
Senior Unsecured Notes due 2019 [Member] | Senior Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term borrowings, carrying value | 298,900,000 | 298,300,000 |  |
Interest rate |  |  | 1.80% |
Senior Unsecured Notes due 2021 [Member] | Senior Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term borrowings, carrying value | 745,900,000 | 744,800,000 |  |
Interest rate |  |  | 2.35% |
Senior Unsecured Notes due 2026 [Member] | Senior Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term borrowings, carrying value | 891,000,000 | 890,100,000 |  |
Interest rate |  |  | 3.15% |
Senior Unsecured Notes due 2046 [Member] | Senior Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term borrowings, carrying value | 546,800,000 | 546,800,000 |  |
Interest rate |  |  | 4.30% |
Other Debt [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term borrowings, carrying value | 3,400,000 | 3,300,000 |  |
Term Loan [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term borrowings, carrying value | $ 500,000,000 | 500,000,000 |  | $ 500,000,000
Interest rate | 2.69% |  |  |
Yen Term Loan [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term borrowings, carrying value | $ 122,400,000 | $ 0 |  |

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