Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current assets:
Cash and equivalents	$ 760	$ 835
Short-term investments	1	29
Accounts receivable, net of allowance for doubtful accounts: 2012 - $54; 2011 - $29	954	702
Deferred income taxes	117	110
Prepaid and other current assets	127	128
Assets held for sale	1,940	2,508
Total current assets	3,899	4,312
Buildings and leasehold improvements	439	435
Equipment and furniture	701	729
Total property and equipment	1,140	1,164
Less: accumulated depreciation	772	791
Property and equipment, net	368	373
Goodwill	1,438	1,104
Other intangible assets, net	1,081	427
Other non-current assets	266	404
Total assets	7,052	6,620
Current liabilities:
Accounts payable	249	223
Accrued compensation and contributions to retirement plans	453	415
Short-term debt	457	400
Income taxes currently payable	158	33
Unearned revenue	1,229	1,187
Other current liabilities	457	392
Liabilities held for sale	664	719
Total current liabilities	3,667	3,369
Long-term debt	799	798
Pension and other postretirement benefits	529	511
Other non-current liabilities	407	358
Total liabilities	5,402	5,036
Redeemable noncontrolling interest	810	0
Commitments and contingencies (Note 13)
Equity:
Common stock, $1 par value: authorized - 600 million shares; issued - 412 million shares in 2012 and 2011	412	412
Additional paid-in capital	492	94
Retained income	6,525	7,667
Accumulated other comprehensive loss	(517)	(425)
Less: common stock in treasury - at cost: 2012 - 133 million shares; 2011 - 136 million shares	(6,145)	(6,240)
Total equity – controlling interests	767	1,508
Total equity – noncontrolling interests (including 2012 - $25 and 2011 - $33 attributable to discontinued operations)	73	76
Total equity	840	1,584
Total liabilities and equity	$ 7,052	$ 6,620