Debt - Schedule of Debt Obligations (Details) $ in Millions, $ in Millions	Apr. 30, 2026 USD ($)	Mar. 31, 2026 USD ($)	Mar. 31, 2026 CAD ($)	Mar. 31, 2026 EUR (€)	Dec. 31, 2025 USD ($)	Mar. 31, 2025 EUR (€)
Debt Instrument [Line Items]
Finance leases		$ 61.0			$ 64.7
Less: unamortized debt discounts and debt issuance costs		(33.6)			(34.7)
Total long-term debt (including current portion)		6,216.4			6,260.1
Current portion of long-term debt		2,367.9			2,394.7
Total long-term debt		3,848.5			3,865.4
Short-term borrowings		55.5			39.4
Current portion of long-term debt and short-term borrowings		2,423.4			2,434.1
Revolving credit facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity		2,000.0
Revolving credit facility | Subsequent event
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 2,000.0
Line of credit facility, remaining borrowing capacity	$ 1,800.0
USD, CAD and GBP Overdraft Facility
Debt Instrument [Line Items]
Revolving credit facility		0.0			0.0
EMEA&APAC
Debt Instrument [Line Items]
Overdraft facility		49.4			32.3
Bank cash		68.3			62.0
Bank cash, net of overdrafts		$ 18.9			29.7
CAD 500 million 3.44% senior notes due July 2026(1)
Debt Instrument [Line Items]
Debt instrument, face amount			$ 500
Debt Instrument, interest rate		3.44%	3.44%	3.44%
$2.0 billion 3.0% senior notes due July 2026(1)
Debt Instrument [Line Items]
Debt instrument, face amount		$ 2,000.0
Debt Instrument, interest rate		3.00%	3.00%	3.00%
EUR 800 million 3.8% notes due 2032
Debt Instrument [Line Items]
Debt instrument, face amount | €				€ 800,000,000		€ 800,000,000
Debt Instrument, interest rate		3.80%	3.80%	3.80%		3.80%
$1.1 billion 5.0% senior notes due May 2042
Debt Instrument [Line Items]
Debt instrument, face amount		$ 1,100.0
Debt Instrument, interest rate		5.00%	5.00%	5.00%
$1.8 billion 4.2% senior notes due July 2046
Debt Instrument [Line Items]
Debt instrument, face amount		$ 1,800.0
Debt Instrument, interest rate		4.20%	4.20%	4.20%
Senior notes | CAD 500 million 3.44% senior notes due July 2026(1)
Debt Instrument [Line Items]
Long-term debt, carrying amount		$ 359.3			364.3
Senior notes | $2.0 billion 3.0% senior notes due July 2026(1)
Debt Instrument [Line Items]
Long-term debt, carrying amount		2,000.0			2,000.0
Senior notes | EUR 800 million 3.8% notes due 2032
Debt Instrument [Line Items]
Long-term debt, carrying amount		924.2			939.7
Senior notes | $1.1 billion 5.0% senior 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% senior notes due July 2046
Debt Instrument [Line Items]
Long-term debt, carrying amount		1,800.0			1,800.0
Other
Debt Instrument [Line Items]
Long-term debt, carrying amount		$ 5.5			$ 26.1