Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating activities
Net income (loss)	$ 564	$ (86)	$ 235
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Loss from discontinued operations	50	52	5
Depreciation and amortization	333	330	354
Stock-based compensation expense	107	72	77
Deferred income taxes	(355)	14	173
Gain on sale of property, plant and equipment and other assets	(6)	(2)	(3)
Goodwill and Long-Lived Intangible Asset Impairment	2	239	1
Changes in assets and liabilities:
Receivables	(144)	(155)	29
Inventories	5	(70)	(68)
Current payables and accrued expenses	(20)	198	(78)
Deferred service revenue and customer deposits	31	(13)	10
Employee benefit plans	59	(60)	(4)
Other assets and liabilities	2	53	21
Net Cash Provided by (Used in) Operating Activities	628	572	752
Investing activities
Expenditures for property, plant and equipment	(91)	(143)	(128)
Proceeds from Sale of property, plant, and equipment	11	3	6
Additions to capitalized software	(238)	(170)	(166)
Business acquisitions, net	(203)	(206)	(8)
Net change in funds held for clients - investing	(15)	0	0
Other investing activities, net	9	(4)	6
Net Cash Provided by (Used in) Investing Activities	(527)	(520)	(290)
Financing activities
Short term borrowings, net	0	(1)	(4)
Payments on term credit facilities	(761)	(51)	(61)
Payments on revolving credit facilities	(3,216)	(2,233)	(1,940)
Repayments of Unsecured Debt	900	0	0
Proceeds from Issuance of Secured Debt	750	0	0
Borrowings on revolving credit facilities	3,535	2,453	1,940
Proceeds from Issuance of Unsecured Debt	1,000	0	0
Debt issuance costs	(32)	0	0
Repurchase of Series A Convertible Preferred Stock	302	0	0
Repurchase of company common stock	(96)	(210)	(350)
Tax withholding payments on behalf of employees	(29)	(36)	(31)
Proceeds from employee stock plans	16	20	15
Increase (Decrease) in Client Funds Held	(15)	0	0
Payments for Repurchase of Redeemable Noncontrolling Interest	(3)	0	0
Other financing activities	(8)	0	(3)
Net Cash Provided by (Used in) Financing Activities	(31)	(58)	(434)
Cash flows from discontinued operations
Net cash used in discontinued operations operating activities	(24)	(36)	(8)
Effect of Exchange Rate changes on cash and cash equivalents	(6)	(25)	16
Decrease in cash, cash equivalents, and restricted cash	40	(67)	36
Cash, Cash Equivalents, Restricted Cash and Restricted Cash at beginning of period	476	543	507
Cash, Cash Equivalents, Restricted Cash and Restricted Cash at end of period	516	476	543
Cash and Cash Equivalents, at Carrying Value	509	464	537
Restricted Cash	7	12	6
Cash, Cash Equivalents, Restricted Cash and Restricted Cash at end of period	516	476	543
Income Taxes Paid, Net	61	106	98
Interest Paid, Excluding Capitalized Interest, Operating Activities	$ 168	$ 160	$ 159