Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025
Cash flows from operating activities:
Net income	$ 156	$ 112
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	42	42
Amortization	131	119
Restructuring charges, net of cash paid	(4)	(2)
Deferred taxes	(1)	(1)
Share-based compensation expense	23	21
Profit-sharing expense	15	14
Non-cash lease expense	61	56
Net periodic pension cost	12	11
Other, net	(2)	2
Changes in operating assets and liabilities, net of effects of acquisitions:
Accounts receivable	(89)	(12)
Contract assets	(133)	(77)
Inventories	(9)	(3)
Prepaid expenses and other current assets	(38)	(36)
Accounts payable	15	7
Accrued liabilities and income taxes payable	(26)	(56)
Contract liabilities	124	37
Other assets and liabilities	(109)	(89)
Net cash provided by operating activities	168	145
Cash flows from investing activities:
Acquisitions, net of cash acquired	(816)	(111)
Purchases of property and equipment	(49)	(39)
Proceeds from sales of property and equipment	4	10
Net cash used in investing activities	(861)	(140)
Cash flows from financing activities:
Net short-term debt	280	0
Proceeds from long-term borrowings	795	0
Payments on long-term borrowings	(303)	(4)
Payments of debt issuance costs	(16)	0
Repurchases of common stock	(66)	(75)
Payments of acquisition-related consideration	(13)	(2)
Restricted shares tendered for taxes	(38)	(20)
Net cash provided by (used in) financing activities	639	(101)
Effect of foreign currency exchange rate change on cash, cash equivalents, and restricted cash	(8)	28
Net decrease in cash, cash equivalents, and restricted cash	(62)	(68)
Cash, cash equivalents, and restricted cash, beginning of period	913	501
Cash, cash equivalents, and restricted cash, end of period	851	433
Supplemental cash flow disclosures:
Cash paid for interest, net of interest income	60	70
Cash paid for income taxes, net of refunds	55	63
Accrued consideration issued in business combinations	10	9
Shares of common stock issued to profit sharing plan	$ 30	$ 24