Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating activities
Net income	$ 21	$ 57
Adjustments to reconcile net income to net cash provided by operating activities:
Loss from discontinued operations	35	0
Depreciation and amortization	86	85
Stock-based compensation expense	14	19
Deferred income taxes	4	(3)
Changes in assets and liabilities:
Receivables	(114)	(17)
Inventories	(42)	(101)
Current payables and accrued expenses	(77)	(82)
Deferred service revenue and customer deposits	75	96
Employee benefit plans	(3)	3
Other assets and liabilities	(23)	(18)
Net cash (used in) provided by operating activities	(24)	39
Investing activities
Expenditures for property, plant and equipment	(29)	(11)
Additions to capitalized software	(42)	(41)
Other investing activities, net	(3)	(1)
Net cash used in investing activities	(74)	(53)
Financing activities
Short term borrowings, net	(1)	3
Payments on term credit facilities	(34)	(11)
Payments on revolving credit facility	(498)	(195)
Borrowings on revolving credit facility	613	480
Repurchases of Company common stock	(165)	(350)
Proceeds from employee stock plans	5	3
Tax withholding payments on behalf of employees	(11)	(22)
Net cash used in financing activities	(91)	(92)
Cash flows from discontinued operations
Net cash used in operating activities	(4)	(3)
Effect of exchange rate changes on cash and cash equivalents	5	8
Decrease in cash, cash equivalents, and restricted cash	(188)	(101)
Cash, cash equivalents and restricted cash at beginning of period	543	507
Cash, cash equivalents and restricted cash at end of period	$ 355	$ 406