CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities:
Net income	$ 252.8	$ 123.6
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	272.2	292.8
Deferred income taxes	20.1	(49.4)
Share-based compensation expense related to equity incentive plans	56.6	42.4
Loss on settlement of debt	0.3	26.8
Amortization of debt discount	12.6	25.3
Amortization of debt issuance costs	3.5	4.8
Other non-cash adjustment	0.9	(0.6)
Changes in operating assets and liabilities, excluding impact of acquisitions:
(Increase) decrease in accounts receivable	(3.0)	39.7
(Increase) decrease in inventories	(19.2)	24.9
Decrease in accounts payable and accrued liabilities	(0.9)	(46.6)
Change in other assets and liabilities	27.5	1.4
Change in income tax payable	6.5	16.7
Net cash provided by operating activities	629.9	501.8
Cash flows from investing activities:
Proceeds from sale of assets	0.0	0.2
Investments in other assets	(26.4)	(7.6)
Capital expenditures	(86.3)	(9.5)
Net cash used in investing activities	(112.7)	(16.9)
Cash flows from financing activities:
Proceeds from issuance of senior notes	997.0	2,182.0
Repayment of senior notes	(1,000.0)	0.0
Repayment of bridge loan facility	0.0	(615.0)
Payments on settlement of convertible debt	0.0	(1,027.2)
Deferred financing costs	(2.1)	(5.2)
Payment of cash dividends	(113.1)	(90.4)
Proceeds from sale of common stock	12.2	11.0
Tax payments related to shares withheld for vested restricted stock units	(25.3)	(11.0)
Capital lease payments	(0.2)	(0.2)
Net cash used in financing activities	(519.5)	(507.7)
Net decrease in cash and cash equivalents	(2.3)	(22.8)
Cash and cash equivalents, and restricted cash at beginning of period	280.0	401.0
Cash and cash equivalents, and restricted cash at end of period	277.7	378.2
Revolving Credit Facility
Cash flows from financing activities:
Proceeds from borrowings on revolving loan under credit facility	775.0	1,238.0
Repayments of line of credit	(1,163.0)	(2,171.9)
Term Loan Facility
Cash flows from financing activities:
Repayments of line of credit	$ 0.0	$ (17.8)