Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating activities
Net income (loss)	$ 274	$ (174)	$ 195
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Loss (income) from discontinued operations	13	24	(10)
Depreciation and amortization	344	308	284
Stock-based compensation expense	61	42	31
Deferred income taxes	10	24	(125)
Gain on sale of property, plant and equipment and other assets	0	(2)	(5)
Loss on divestiture	2	0	0
Impairment of long-lived and other assets	2	63	16
Changes in assets and liabilities:
Receivables	(89)	28	(104)
Inventories	(86)	(46)	77
Current payables and accrued expenses	216	8	70
Deferred service revenue and customer deposits	88	19	1
Employee benefit plans	33	384	105
Other assets and liabilities	26	3	(11)
Net cash provided by operating activities	894	681	524
Investing activities
Expenditures for property, plant and equipment	(73)	(79)	(118)
Proceeds from Sale of property, plant, and equipment	0	19	1
Additions to capitalized software	(154)	(150)	(140)
Business acquisitions, net	0	0	(1,647)
Changes in restricted cash	0	0	1,114
Proceeds from divestiture	47	0	0
Other investing activities, net	(9)	1	2
Net cash used in investing activities	(189)	(209)	(788)
Financing activities
Short term borrowings, net	(8)	8	0
Payments on term credit facilities	(97)	(383)	(37)
Borrowings on term credit facilities	0	0	250
Payments on revolving credit facilities	(1,431)	(1,694)	(1,050)
Borrowings on revolving credit facilities	1,331	1,698	1,146
Debt issuance costs	(9)	0	(5)
Series A convertible preferred stock issuance, net of issuance costs of $26 million	0	794	0
Payments for tender offer share repurchase	0	(1,005)	0
Repurchase of company common stock	(250)	0	0
Tax withholding payments on behalf of employees	(16)	(16)	(28)
Proceeds from employee stock plans	15	15	13
Other financing activities	(2)	0	(5)
Net cash (used in) provided by financing activities	(467)	(583)	284
Cash flows from discontinued operations
Net cash used in discontinued operations operating activities	(39)	(43)	(1)
Effect of exchange rate changes on cash and cash equivalents	(29)	(29)	(36)
Increase (decrease) in cash and cash equivalents	170	(183)	(17)
Cash and cash equivalents at beginning of period	328	511	528
Cash and cash equivalents at end of period	498	328	511
Income Taxes Paid, Net	66	60	75
Interest Paid, Net	$ 155	$ 163	$ 170