Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 5,899	$ 4,108
Restricted cash	8	14
Accounts receivable, net of allowance for doubtful accounts: 2021 - $31; 2020 - $30	1,445	1,593
Prepaid and other current assets	286	273
Total current assets	7,638	5,988
Property and equipment, net of accumulated depreciation: 2021 - $624; 2020 - $587	256	284
Right of use assets	462	494
Goodwill	3,710	3,735
Other intangible assets, net	1,288	1,352
Other non-current assets	757	684
Total assets	14,111	12,537
Current liabilities:
Accounts payable	244	233
Accrued compensation and contributions to retirement plans	468	551
Income taxes currently payable	157	84
Unearned revenue	2,006	2,168
Other current liabilities	511	551
Total current liabilities	3,386	3,587
Long-term debt	4,113	4,110
Lease liabilities — non-current	508	544
Pension and other postretirement benefits	288	291
Other non-current liabilities	715	653
Total liabilities	9,010	9,185
Redeemable noncontrolling interest (Note 8)	3,186	2,781
Commitments and contingencies (Note 12)
Equity:
Common stock	294	294
Additional paid-in capital	1,001	946
Retained income	14,772	13,367
Accumulated other comprehensive loss	(750)	(637)
Less: common stock in treasury	(13,472)	(13,461)
Total equity — controlling interests	1,845	509
Total equity — noncontrolling interests	70	62
Total equity	1,915	571
Total liabilities and equity	$ 14,111	$ 12,537