CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities:
Net income	$ 217	$ 373
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	107	106
Credit for credit losses	(1)	0
Deferred income tax benefit	(4)	(43)
Stock-based compensation expense	24	18
Other, net	3	4
Changes in operating assets and liabilities:
Accounts receivable	(58)	72
Accounts payable and accrued expenses	(211)	(165)
Income taxes payable	11	95
Other assets and liabilities, net	6	20
Net cash provided by operating activities	94	480
Cash flows from investing activities:
Business acquisitions, net of cash acquired	(31)	(105)
Capital expenditures	(127)	(63)
Increase in investments and other assets	0	(1)
Net cash used in investing activities	(158)	(169)
Cash flows from financing activities:
Proceeds from borrowings	140	0
Repayments of debt	(140)	(1)
Purchases of treasury stock	0	(373)
Exercise of stock options	25	10
Employee payroll tax withholdings on stock issued under stock-based compensation plans	(28)	(27)
Dividends paid	(74)	(74)
Distributions to noncontrolling interest partners	(14)	(20)
Other financing activities, net	15	14
Net cash used in financing activities	(76)	(471)
Net change in cash and cash equivalents and restricted cash	(140)	(160)
Cash and cash equivalents and restricted cash, beginning of period	315	872
Cash and cash equivalents and restricted cash, end of period	$ 175	$ 712