Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Revenue:
Revenue	$ 5,417	$ 5,804
Operating costs and expenses:
SAP S4 upgrade expense	30	34
General and administrative	62	61
Total operating costs and expenses	4,986	4,817
Operating income	431	987
Interest expense, net of interest income	(86)	(92)
Other, net	(39)	(108)
Income (loss) from continuing operations before income taxes	306	787
Income tax (provision) benefit	(103)	(178)
Net income (loss)	203	609
Net (income) loss attributable to noncontrolling interest	1	(3)
Net income (loss) attributable to company	$ 204	$ 606
Earnings Per Share, Basic	$ 0.24	$ 0.68
Earnings Per Share, Diluted	$ 0.24	$ 0.68
Weighted Average Number of Shares Outstanding, Basic	866	889
Weighted Average Number of Shares Outstanding, Diluted	866	891
Impairments and other charges	$ 356	$ 0
MEXICO | Accounts Receivable [Member] | Customer Concentration Risk
Operating costs and expenses:
Concentration Risk, Percentage	7.00%
Noncontrolling Interest in Consolidated Subsidiaries
Operating costs and expenses:
Net income (loss)	$ (1)	3
Services [Member]
Revenue:
Revenue	3,809	4,146
Operating costs and expenses:
Cost of services and sales	3,286	3,428
Product sales [Member]
Revenue:
Revenue	1,608	1,658
Operating costs and expenses:
Cost of services and sales	$ 1,252	$ 1,294