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Debt - Summary of Debt (Detail) - USD ($) $ in Millions | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Debt Instrument [Line Items] |  |
Commercial paper | $ 258.9 |
Receivables facility | 269.0 |
Other debt | 52.6 | $ 48.4
Debt |  |
Total debt | 7,268.2 | 7,015.0
Short-term debt and current portion of long-term debt | (573.6) | (318.7)
Long-term debt | 6,694.6 | 6,696.3
2.60% Senior Notes Due 2019 [Member] |  |
Debt Instrument [Line Items] |  |
Total Debt |  | 267.3
4.70% Senior Notes Due 2020 [Member] |  |
Debt Instrument [Line Items] |  |
Total Debt | 304.7 | 304.6
3.15% Senior Notes Due 2021 [Member] |  |
Debt Instrument [Line Items] |  |
Total Debt | 93.5 | 97.5
3.75% Senior Notes Due 2021 [Member] |  |
Debt Instrument [Line Items] |  |
Total Debt | 344.6 | 353.2
4.00% Senior Notes Due 2022 [Member] |  |
Debt Instrument [Line Items] |  |
Total Debt | 249.1 | 249.0
3.85% Senior Notes Due 2023 [Member] |  |
Debt Instrument [Line Items] |  |
Total Debt | 1,741.3 | 1,740.8
5.00% Senior Notes Due 2023 [Member] |  |
Debt Instrument [Line Items] |  |
Total Debt | 309.5 | 310.0
4.00% Senior Notes Due 2024 [Member] |  |
Debt Instrument [Line Items] |  |
Total Debt | 496.6 | 496.4
3.90% Senior Notes Due 2025 [Member] |  |
Debt Instrument [Line Items] |  |
Total Debt | 90.4 | 90.3
4.20% Senior Notes Due 2026 [Member] |  |
Debt Instrument [Line Items] |  |
Total Debt | 1,984.9 | 1,984.5
5.375% Senior Notes Due 2036 [Member] |  |
Debt Instrument [Line Items] |  |
Total Debt | 415.9 | 415.8
5.50% Senior Notes Due 2046 [Member] |  |
Debt Instrument [Line Items] |  |
Total Debt | $ 657.2 | $ 657.2

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