Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Operating activities
Net income	$ 57	$ 32
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	85	89
Stock-based compensation expense	19	13
Deferred income taxes	(3)	5
Impairment of long-lived and other assets	0	1
Changes in assets and liabilities:
Receivables	(17)	(52)
Inventories	(101)	(83)
Current payables and accrued expenses	(82)	(31)
Deferred service revenue and customer deposits	96	97
Employee benefit plans	3	(14)
Other assets and liabilities	(14)	(34)
Net cash provided by operating activities	43	23
Investing activities
Expenditures for property, plant and equipment	(11)	(9)
Additions to capitalized software	(41)	(31)
Other investing activities, net	(1)	(8)
Net cash used in investing activities	(53)	(48)
Financing activities
Short term borrowings, net	3	(9)
Payments on term credit facilities	(11)	(56)
Payments on revolving credit facility	(195)	(180)
Borrowings on revolving credit facility	480	511
Debt issuance costs	0	(8)
Repurchases of Company common stock	(350)	(213)
Proceeds from employee stock plans	3	3
Tax withholding payments on behalf of employees	(22)	(6)
Net cash (used in) provided by financing activities	(92)	42
Cash flows from discontinued operations
Net cash used in operating activities	(3)	(12)
Effect of exchange rate changes on cash and cash equivalents	8	0
(Decrease) increase in cash and cash equivalents	(97)	5
Cash and cash equivalents at beginning of period	498	328
Cash and cash equivalents at end of period	$ 401	$ 333