Debt - Schedule of Debt Obligations (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Present value of finance lease liabilities	$ 67.2	$ 64.0
Less: unamortized debt discounts and debt issuance costs	(44.6)	(50.3)
Total long-term debt (including current portion)	7,155.2	8,214.3
Current portion of long-term debt	(508.0)	(1,006.1)
Long-term debt	6,647.2	7,208.2
Short-term borrowings	6.9	14.0
Current portion of long-term debt	508.0	1,006.1
Current portion of long-term debt and short-term borrowings	514.9	1,020.1
Senior notes \| CAD 500 million 2.84% notes due July 2023
Debt Instrument [Line Items]
Long-term debt, carrying amount	395.7	392.9
Senior notes \| CAD 500 million 3.44% notes due 2026
Debt Instrument [Line Items]
Long-term debt, carrying amount	395.7	392.9
Senior notes \| $1.0 billion 2.1% notes due 2021
Debt Instrument [Line Items]
Long-term debt, carrying amount	0.0	1,000.0
Senior notes \| $500 million 3.5% notes due 2022
Debt Instrument [Line Items]
Long-term debt, carrying amount	500.9	503.7
Senior notes \| $2.0 billion 3.0% notes due July 2026
Debt Instrument [Line Items]
Long-term debt, carrying amount	2,000.0	2,000.0
Senior notes \| $1.1 billion 5.0% notes due May 2042
Debt Instrument [Line Items]
Long-term debt, carrying amount	1,100.0	1,100.0
Senior notes \| $1.8 billion 4.2% notes due July 2046
Debt Instrument [Line Items]
Long-term debt, carrying amount	1,800.0	1,800.0
Senior notes \| EUR 800 million 1.25% notes due 2024
Debt Instrument [Line Items]
Long-term debt, carrying amount	909.6	977.3
Other
Debt Instrument [Line Items]
Long-term debt, carrying amount	$ 30.7	$ 33.8

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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Present value of lessee's discounted obligation for lease payments from finance lease.

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