Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 1,756	$ 2,779
Accounts receivable, net of allowance for doubtful accounts: 2018 - $34; 2017 - $33	1,313	1,319
Prepaid and other current assets	215	226
Total current assets	3,284	4,324
Property and equipment, net of accumulated depreciation: 2018 - $569; 2017 - $554	270	275
Goodwill	3,045	2,989
Other intangible assets, net	1,390	1,388
Other non-current assets	508	449
Total assets	8,497	9,425
Current liabilities:
Accounts payable	196	195
Accrued compensation and contributions to retirement plans	195	472
Short-term debt	400	399
Income taxes currently payable	100	77
Unearned revenue	1,679	1,613
Accrued legal and regulatory settlements	82	107
Other current liabilities	483	351
Total current liabilities	3,135	3,214
Long-term debt	3,170	3,170
Pension and other postretirement benefits	235	244
Other non-current liabilities	539	679
Total liabilities	7,079	7,307
Redeemable noncontrolling interest (Note 8)	1,350	1,350
Commitments and contingencies (Note 12)
Equity:
Common stock	412	412
Additional paid-in capital	335	525
Retained income	10,427	10,025
Accumulated other comprehensive loss	(630)	(649)
Less: common stock in treasury	(10,537)	(9,602)
Total equity — controlling interests	7	711
Total equity — noncontrolling interests	61	57
Total equity	68	768
Total liabilities and equity	$ 8,497	$ 9,425

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.