Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net income (loss)	$ (7)	$ (8)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation	19	19
Amortization	57	31
Deferred taxes	(10)
Share-based compensation expense	3	3
Profit-sharing expense	3	3
Non-cash lease expense	16	8
Non-service pension benefit	(11)
Other, net	5	2
Changes in operating assets and liabilities, net of effects of business acquisitions:
Accounts receivable	60	44
Contract assets	(55)	(11)
Inventories	(9)	(2)
Prepaid expenses and other current assets	(31)	5
Pension contribution	(27)
Accounts payable	(32)	17
Accrued liabilities and income taxes payable	(96)	(71)
Contract liabilities	20	2
Other assets and liabilities	(23)	(10)
Net cash (used in) provided by operating activities	(118)	32
Cash flows from investing activities:
Acquisitions, net of cash acquired	(2,875)	(7)
Purchases of property and equipment	(12)	(18)
Proceeds from sales of property, equipment, held for sale assets, and businesses	3	2
Net cash used in investing activities	(2,884)	(23)
Cash flows from financing activities:
Proceeds from long-term borrowings	1,101
Payments on long-term borrowings	(30)	(6)
Deferred financing costs paid	(25)
Repurchases of Common Stock	(11)
Proceeds from equity issuances	797	230
Restricted shares tendered for taxes	(1)	(1)
Net cash provided by financing activities	1,831	223
Effect of foreign currency exchange rate change on cash and cash equivalents	(2)	1
Net (decrease) increase in cash, cash equivalents, and restricted cash	(1,173)	233
Cash, cash equivalents, and restricted cash, beginning of period	1,491	515
Cash, cash equivalents, and restricted cash, end of period	318	748
Supplemental cash flow disclosures:
Cash paid for interest	24	12
Cash paid for income taxes, net of refunds	8	2
Share of Common Stock issued to profit sharing plan	$ 15	$ 13