Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating activities
Net income	$ 62	$ 33	$ 147
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	116	134	149
Stock-based compensation expense	126	126	112
Deferred income taxes	(11)	(26)	14
Blue chip swap losses	13	0	0
Changes in assets and liabilities:
Receivables	78	(28)	(5)
Inventories	(5)	18	3
Account payables and accrued expenses	7	35	17
Deferred revenue	(5)	18	42
Other assets and liabilities	(6)	109	(16)
Net cash provided by operating activities	375	419	463
Investing activities
Expenditures for property and equipment	(19)	(14)	(28)
Additions to capitalized software	(1)	(2)	(3)
Business acquisitions, other investing activities and proceeds on Blue Chip Swap, net of purchases	(29)	(2)	0
Net cash used in investing activities	(49)	(18)	(31)
Financing activities
Repurchases of common stock	(308)	(387)	(244)
Proceeds from long-term borrowings	0	500	0
Repayments of long-term borrowings	0	(413)	(44)
Payments of finance leases	(82)	(86)	(92)
Other financing activities, net	7	5	24
Net cash used in financing activities	(383)	(381)	(356)
Effect of exchange rate changes on cash and cash equivalents	(28)	(44)	(14)
(Decrease) increase in cash, cash equivalents and restricted cash	(85)	(24)	62
Cash, cash equivalents and restricted cash at beginning of year	571	595	533
Cash, cash equivalents and restricted cash at end of year	486	571	595
Reconciliation of cash, cash equivalents and restricted cash to the Consolidated Balance Sheets
Cash and cash equivalents	486	569	592
Restricted cash	0	2	3
Total cash, cash equivalents and restricted cash	486	571	595
Supplemental cash flow disclosure:
Assets acquired by finance lease	90	78	76
Assets acquired by operating lease	6	4	9
Annual variable incentive payout settled in equity	0	0	17
Cash paid during the year for:
Income taxes, net	65	(18)	44
Interest	$ 30	$ 23	$ 26