CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities:
Net income	$ 1,053.4	$ 494.8
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	511.2	549.7
Deferred income taxes	131.3	(11.2)
Share-based compensation expense related to equity incentive plans	82.5	112.3
Loss on settlement of debt	8.3	85.5
Amortization of debt discount	3.6	24.2
Amortization of debt issuance costs	4.7	6.4
Other non-cash adjustment	(2.3)	(3.9)
Changes in operating assets and liabilities, excluding impact of acquisitions:
(Increase) decrease in accounts receivable	(60.6)	12.1
Increase in inventories	(190.2)	(49.8)
Increase in accounts payable and accrued liabilities	144.3	3.3
Change in other assets and liabilities	(10.6)	39.1
Change in income tax payable	(42.0)	(20.9)
Net cash provided by operating activities	1,633.6	1,241.6
Cash flows from investing activities:
Proceeds from sales of assets	0.4	12.2
Investments in other assets	(52.8)	(56.1)
Capital expenditures	(232.2)	(164.8)
Net cash used in investing activities	(284.6)	(208.7)
Cash flows from financing activities:
Proceeds from issuance of senior notes	0.0	997.0
Repayment of senior notes	0.0	(1,000.0)
Payments on settlement of convertible debt	(170.4)	(263.6)
Deferred financing costs	0.0	(2.6)
Proceeds from sale of common stock	37.8	33.4
Tax payments related to shares withheld for vested RSUs	(40.1)	(49.1)
Repurchase of common stock	(442.4)	0.0
Payment of cash dividends	(319.1)	(234.3)
Capital lease payments	(0.4)	(0.4)
Net cash used in financing activities	(1,361.6)	(1,059.6)
Net decrease in cash and cash equivalents	(12.6)	(26.7)
Cash and cash equivalents, and restricted cash at beginning of period	317.4	280.0
Cash and cash equivalents, and restricted cash at end of period	304.8	253.3
Revolving Credit Facility
Cash flows from financing activities:
Proceeds from borrowings on Revolving Credit Facility	2,765.0	1,945.0
Repayments of line of credit	$ (3,192.0)	$ (2,485.0)