Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 1,917	$ 2,777
Restricted cash	41	2
Short-term investments	18	12
Accounts receivable, net of allowance for doubtful accounts: 2018- $34 ; 2017 - $33	1,449	1,319
Prepaid and other current assets	179	214
Total current assets	3,604	4,324
Property and equipment:
Buildings and leasehold improvements	372	354
Equipment and furniture	494	475
Total property and equipment	866	829
Less: accumulated depreciation	(596)	(554)
Property and equipment, net	270	275
Goodwill	3,535	2,989
Other intangible assets, net	1,524	1,388
Other non-current assets	525	449
Total assets	9,458	9,425
Current liabilities:
Accounts payable	211	195
Accrued compensation and contributions to retirement plans	354	472
Short-term debt	0	399
Income taxes currently payable	72	77
Unearned revenue	1,641	1,613
Accrued legal and regulatory settlements	1	107
Other current liabilities	350	351
Total current liabilities	2,629	3,214
Long-term debt	3,662	3,170
Pension and other postretirement benefits	229	244
Other non-current liabilities	634	679
Total liabilities	7,154	7,307
Redeemable noncontrolling interest	1,620	1,352
Commitments and contingencies (Note 13)
Equity:
Common stock, $1 par value: authorized - 600 million shares; issued: 2018 - 294 million shares; 2017 - 412 million shares	294	412
Additional paid-in capital	833	525
Retained income	11,284	10,023
Accumulated other comprehensive loss	(742)	(649)
Less: common stock in treasury - at cost: 2018 - 45 million shares; 2017 - 158 million shares	(11,041)	(9,602)
Total equity – controlling interests	628	709
Total equity – noncontrolling interests	56	57
Total equity	684	766
Total liabilities and equity	$ 9,458	$ 9,425