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- Definition

Share-Based Compensation Arrangement by Share-Based Payment Award, Awards Granted, Percentage of Target

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Treasury Stock, Shares, Share Based Compensation Plan Settlement

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Percentage of vesting of award under share-based payment arrangement.

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Number of shares remaining authorized to be purchased under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

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Number of previously issued common shares repurchased by the issuing entity and held in treasury.

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CAPITAL STOCK - Narrative (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025	Oct. 29, 2025	Oct. 30, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Treasury stock, share-based compensation plan settlement (in shares)	1.6	2.0
Treasury stock, common	$ 20.9		$ 153.8
Share-based compensation cash settlement	$ 325.5	$ 156.0
RSUs
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting period	3 years
RSUs \| Share-Based Payment Arrangement, Tranche One
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting percentage	33.30%
RSUs \| Share-Based Payment Arrangement, Tranche Two
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting percentage	33.30%
RSUs \| Share-Based Payment Arrangement, Tranche Three
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting percentage	33.30%
Employee Stock Option
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting period	4 years
Employee Stock Option \| Share-Based Payment Arrangement, Tranche One
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting percentage	25.00%
Employee Stock Option \| Share-Based Payment Arrangement, Tranche Two
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting percentage	25.00%
Employee Stock Option \| Share-Based Payment Arrangement, Tranche Three
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting percentage	25.00%
Employee Stock Option \| Share-Based Payment Arrangement, Tranche Four
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting percentage	25.00%
PSUs
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award performance period	3 years
PSUs \| Minimum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-based payment award, awards granted, percentage of target	0.00%
PSUs \| Maximum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-based payment award, awards granted, percentage of target	200.00%
Share-Based Payment Arrangement
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-based compensation cash settlement	$ 325.5	$ 156.0
Treasury stock
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Treasury stock, common (in shares)	0.2		1.8
2024 NCIB
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share repurchase program, authorized, number of shares (in shares)					8.6
2025 NCIB
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share repurchase program, authorized, number of shares (in shares)				5.7
Share repurchase program, remaining authorized, number of shares (in shares)	5.5