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Debt - Summary of Debt (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Commercial paper	$ 116.0
Receivables facilities	768.5	$ 187.4
Other debt	65.9	73.3
Total debt	11,475.4	11,892.8
Debt
Total debt	11,475.4	11,892.8
Short-term debt and current portion of long-term debt	(1,291.0)	(601.9)
Long-term debt	10,184.4	11,290.9
2.05% Senior Notes Due 2017 [Member]
Debt Instrument [Line Items]
Total Debt	349.9	349.4
6.25% Senior Notes Due 2018 [Member]
Debt Instrument [Line Items]
Total Debt		249.8
2.15% Senior Notes Due 2018 [Member]
Debt Instrument [Line Items]
Total Debt	299.4	298.9
2.60% Senior Notes Due 2019 [Member]
Debt Instrument [Line Items]
Total Debt	266.5	995.0
2.875% Senior Notes Due 2019 [Member]
Debt Instrument [Line Items]
Total Debt	348.5	347.9
4.70% Senior Notes Due 2020 [Member]
Debt Instrument [Line Items]
Total Debt	304.2	380.0
3.15% Senior Notes Due 2021 [Member]
Debt Instrument [Line Items]
Total Debt	993.1	991.7
3.75% Senior Notes Due 2021 [Member]
Debt Instrument [Line Items]
Total Debt	368.1	326.9
4.00% Senior Notes Due 2022 [Member]
Debt Instrument [Line Items]
Total Debt	248.7	248.5
3.85% Senior Notes Due 2023 [Member]
Debt Instrument [Line Items]
Total Debt	1,738.4	1,737.0
5.00% Senior Notes Due 2023 [Member]
Debt Instrument [Line Items]
Total Debt	312.6	314.1
4.00% Senior Notes Due 2024 [Member]
Debt Instrument [Line Items]
Total Debt	495.7	495.2
3.90% Senior Notes Due 2025 [Member]
Debt Instrument [Line Items]
Total Debt	297.1	296.8
4.20% Senior Notes Due 2026 [Member]
Debt Instrument [Line Items]
Total Debt	1,982.3	1,981.0
5.375% Senior Notes Due 2036 [Member]
Debt Instrument [Line Items]
Total Debt	494.9	494.7
5.50% Senior Notes Due 2046 [Member]
Debt Instrument [Line Items]
Total Debt	1,725.9	1,725.7
Term Loan [Member]
Debt Instrument [Line Items]
Total Debt	$ 299.7	$ 399.5

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Secured financing facility where underlying trade receivables are not accounted for as "sale" under ASC 860 with initial maturity date of the financing facility being 364 days.

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Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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