Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended				6 Months Ended		12 Months Ended
	Aug. 31, 2025	May 31, 2025	Aug. 31, 2024	May 31, 2024	Aug. 31, 2025	Aug. 31, 2024	Feb. 28, 2025
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ 486.1	$ 523.8	$ (1,182.4)	$ 892.8	$ 1,009.9	$ (289.6)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Deferred tax provision (benefit)					277.6	(178.5)
Depreciation					207.9	220.8
Stock-based compensation					32.1	41.0
Noncash lease expense					62.6	57.7
Asset impairment and related expenses	0.0		0.0		52.1	0.0
Net gain in connection with Exchangeable Shares	0.0		0.0		0.0	(83.3)
Goodwill impairment	0.0		2,250.0		0.0	2,250.0	$ 2,740.7
Change in operating assets and liabilities, net of effects from purchase and sale of business:
Accounts receivable					72.2	(40.6)
Inventories					(48.3)	14.7
Prepaid expenses and other current assets					(56.8)	(77.7)
Accounts payable					53.0	134.5
Contract liabilities					(50.4)	9.7
Other accrued expenses and liabilities					(57.0)	(55.4)
Other					(65.6)	(131.0)
Total adjustments					479.4	2,161.9
Net cash provided by (used in) operating activities					1,489.3	1,872.3
Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract]
Purchase of property, plant, and equipment					(410.1)	(703.1)
Purchase of business, net of cash acquired					0.0	(158.3)
Investments in equity method investees and securities					(7.0)	(19.0)
Proceeds from sale of assets					30.8	32.8
Proceeds from sale of business					851.1	0.0
Other investing activities					0.0	(10.0)
Net cash provided by (used in) investing activities					464.8	(857.6)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from issuance of long-term debt					499.1	0.0
Principal payments of long-term debt					(902.1)	(554.3)
Net proceeds from (repayments of) short-term borrowings					(554.2)	266.7
Dividends paid					(361.1)	(368.6)
Purchases of treasury stock					(604.0)	(449.2)
Proceeds from shares issued under equity compensation plans					3.1	48.4
Payments of minimum tax withholdings on stock-based payment awards					(9.5)	(13.8)
Payments of debt issuance, debt extinguishment, and other financing costs					(5.4)	0.0
Distributions to noncontrolling interests					(17.5)	(32.5)
Payment of contingent consideration					(1.5)	(0.7)
Net cash provided by (used in) financing activities					(1,953.1)	(1,104.0)
Effect of exchange rate changes on cash and cash equivalents					2.9	1.5
Net increase (decrease) in cash and cash equivalents					3.9	(87.8)
Cash and cash equivalents, beginning of period		$ 68.1		$ 152.4	68.1	152.4	152.4
Cash and cash equivalents, end of period	$ 72.0		$ 64.6		72.0	64.6	$ 68.1
Supplemental disclosures of noncash investing and financing activities
Additions to property, plant, and equipment					$ 62.5	$ 114.7