COMBINED INCOME STATEMENT - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
COMBINED INCOME STATEMENT
Revenue	$ 4,579.0	$ 4,856.0	$ 14,102.0	$ 14,425.0
Cost of services	4,182.0	4,332.0	12,727.0	12,876.0
Expense and other (income)
Selling, general and administrative expenses	854.0	654.0	2,421.0	2,123.0
Workforce rebalancing charges (benefit)	(1.0)	(1.0)	40.0	355.0
Research, development and engineering expenses	14.0	17.0	42.0	56.0
Interest expense	17.0	16.0	46.0	47.0
Other (income) and expense	(17.0)	8.0	16.0	17.0
Total costs and expenses	5,047.0	5,026.0	15,292.0	15,474.0
Income (loss) before income taxes	(469.0)	(170.0)	(1,191.0)	(1,050.0)
Provision for income taxes	223.0	68.0	389.0	243.0
Net income (loss)	$ (692.0)	$ (238.0)	$ (1,579.0)	$ (1,293.0)