Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Operating activities:
Net income	$ 1,359,357	$ 1,066,126
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of property, equipment and intangibles	231,510	200,382
Amortization of debt discount and issuance costs	3,300	2,898
Deferred income taxes	32,249	12,383
Share-based compensation programs	17,062	16,578
Other	2,576	5,830
Changes in operating assets and liabilities:
Accounts receivable	(34,970)	(38,892)
Inventory	(76,239)	(154,986)
Accounts payable	481,431	228,943
Income taxes payable	123,581	90,383
Other	209,272	60,031
Net cash provided by operating activities	2,349,129	1,489,676
Investing activities:
Purchases of property and equipment	(363,425)	(481,207)
Proceeds from sale of property and equipment	11,690	5,479
Investment in tax credit equity investments	(95,292)	(17,988)
Other	(312)	661
Net cash used in investing activities	(447,339)	(493,055)
Financing activities:
Proceeds from borrowings on revolving credit facility	1,162,000	2,192,000
Payments on revolving credit facility	(1,423,000)	(2,404,000)
Proceeds from the issuance of long-term debt	997,515	499,955
Payment of debt issuance costs	(7,779)	(3,991)
Repurchases of common stock	(1,094,000)	(1,307,983)
Net proceeds from issuance of common stock	51,174	39,077
Other	(253)	(190)
Net cash used in financing activities	(314,343)	(985,132)
Effect of exchange rate changes on cash	(755)	0
Net increase in cash and cash equivalents	1,586,692	11,489
Cash and cash equivalents at beginning of the period	40,406	31,315
Cash and cash equivalents at end of the period	1,627,098	42,804
Supplemental disclosures of cash flow information:
Income taxes paid	250,484	218,386
Interest paid, net of capitalized interest	$ 118,397	$ 110,014