Face (par) amount of debt instrument at time of issuance.

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Amount of unamortized debt discount (premium) and debt issuance costs.

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

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Carrying value as of the balance sheet date of uncollateralized debt obligation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

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Change in fair value of debt hedged by interest rate swaps.

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Debt - Summary of Debt Instruments (Detail) $ in Millions, € in Billions, ¥ in Billions	Sep. 30, 2021 USD ($)	Sep. 30, 2021 EUR (€)	Sep. 30, 2021 JPY (¥)	Dec. 31, 2020 USD ($)	Mar. 20, 2020 USD ($)
Current portion of long-term debt
Current portion of long-term debt	$ 1,045.7			$ 500.0
Long-term debt
Senior Notes due	7,300.0
Debt discount and issuance costs	(37.6)			(48.2)
Adjustment related to interest rate swaps	(9.4)			3.1
Total long-term debt	6,458.1			7,626.5
Senior Notes [Member] \| 3.375% [Member] \| Due in 2021 [Member]
Current portion of long-term debt
Current portion of long-term debt				300.0
Senior Notes [Member] \| 3.150% [Member] \| Due in 2022 [Member]
Current portion of long-term debt
Current portion of long-term debt	750.0
Long-term debt
Senior Notes due				750.0
Senior Notes [Member] \| 3.700% [Member] \| Due in 2023 [Member]
Long-term debt
Senior Notes due	300.0			300.0
Senior Notes [Member] \| 3.550% [Member] \| Due in 2025 [Member]
Long-term debt
Senior Notes due	2,000.0			2,000.0
Senior Notes [Member] \| 3.550% [Member] \| Due in 2030 [Member]
Long-term debt
Senior Notes due	900.0			900.0	$ 900.0
Senior Notes [Member] \| 3.050% [Member] \| Due in 2026 [Member]
Long-term debt
Senior Notes due	600.0			600.0	$ 600.0
Senior Notes [Member] \| 4.250% [Member] \| Due in 2035 [Member]
Long-term debt
Senior Notes due	253.4			253.4
Senior Notes [Member] \| 5.750% [Member] \| Due in 2039 [Member]
Long-term debt
Senior Notes due	317.8			317.8
Senior Notes [Member] \| 4.450% [Member] \| Due in 2045 [Member]
Long-term debt
Senior Notes due	395.4			395.4
Japan Term Loan A [Member]
Current portion of long-term debt
Current portion of long-term debt	104.9
Long-term debt
Term loan			¥ 11.7	113.3
Japan Term Loan B [Member]
Current portion of long-term debt
Current portion of long-term debt	190.8
Long-term debt
Term loan			¥ 21.3	206.3
Floating Rate Notes [Member] \| Due in 2021 [Member]
Current portion of long-term debt
Current portion of long-term debt				200.0
Euro Notes [Member]
Long-term debt
Term loan \| €		€ 1.7
Euro Notes [Member] \| 1.414% [Member] \| Due in 2022 [Member]
Long-term debt
Term loan	579.5			611.8
Euro Notes [Member] \| 1.164% [Member] \| Due in 2027 [Member]
Long-term debt
Term loan	579.5			611.8
Euro Notes [Member] \| 2.425% [Member] \| Due in 2026 [Member]
Long-term debt
Term loan	$ 579.5			$ 611.8