Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	[1]
Operating activities:
Net income	$ 832,105	$ 674,833
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of property, equipment and intangibles	151,873	132,275
Amortization of debt discount and issuance costs	2,152	1,887
Deferred income taxes	14,987	8,364
Share-based compensation programs	11,480	11,015
Other	1,906	4,277
Changes in operating assets and liabilities:
Accounts receivable	(34,966)	(74,978)
Inventory	(78,086)	(69,103)
Accounts payable	334,503	138,522
Income taxes payable	210,855	(833)
Other	112,269	20,745
Net cash provided by operating activities	1,559,078	847,004
Investing activities:
Purchases of property and equipment	(244,471)	(295,608)
Proceeds from sale of property and equipment	4,846	3,138
Investment in tax credit equity investments	(95,292)	(1,717)
Other	(311)	839
Net cash used in investing activities	(335,228)	(293,348)
Financing activities:
Proceeds from borrowings on revolving credit facility	1,162,000	1,629,000
Payments on revolving credit facility	(1,423,000)	(1,760,000)
Proceeds from the issuance of long-term debt	499,795	499,955
Payment of debt issuance costs	(3,840)	(3,988)
Repurchases of common stock	(651,027)	(920,717)
Net proceeds from issuance of common stock	25,593	26,778
Other	(253)	(190)
Net cash used in financing activities	(390,732)	(529,162)
Effect of exchange rate changes on cash	(1,101)	0
Net increase in cash and cash equivalents	832,017	24,494
Cash and cash equivalents at beginning of the period	40,406	31,315
Cash and cash equivalents at end of the period	872,423	55,809
Supplemental disclosures of cash flow information:
Income taxes paid	20,187	194,503
Interest paid, net of capitalized interest	$ 73,091	$ 64,201

[1] Note: Certain prior period amounts have been reclassified to conform to current period presentation.