Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 2,384	$ 2,392
Accounts receivable, net of allowance for doubtful accounts: 2017 - $32; 2016 - $28	1,166	1,122
Prepaid and other current assets	173	157
Total current assets	3,723	3,671
Property and equipment, net of accumulated depreciation: 2017 - $532; 2016 - $537	264	271
Goodwill	2,982	2,949
Other intangible assets, net	1,442	1,506
Other non-current assets	380	272
Total assets	8,791	8,669
Current liabilities:
Accounts payable	162	183
Accrued compensation and contributions to retirement plans	294	409
Income taxes currently payable	79	95
Unearned revenue	1,502	1,509
Other current liabilities	325	415
Total current liabilities	2,362	2,611
Long-term debt	3,566	3,564
Pension and other postretirement benefits	269	274
Other non-current liabilities	414	439
Total liabilities	6,611	6,888
Redeemable noncontrolling interest (Note 8)	1,107	1,080
Commitments and contingencies (Note 12)
Equity:
Common stock	412	412
Additional paid-in capital	490	502
Retained income	9,816	9,210
Accumulated other comprehensive loss	(699)	(773)
Less: common stock in treasury	(9,000)	(8,701)
Total equity — controlling interests	1,019	650
Total equity — noncontrolling interests	54	51
Total equity	1,073	701
Total liabilities and equity	$ 8,791	$ 8,669