Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents (Note 3)	$ 427,589	$ 425,354
Accounts receivable, net of allowances for doubtful accounts and billing adjustments of $4.8 million as of 2017 and 2016, respectively	442,094	432,847
Prepaid expenses and other current assets (Note 3)	157,325	164,488
Total current assets	1,027,008	1,022,689
Goodwill (Note 2)	3,271,975	3,270,952
Other intangible assets, net of accumulated amortization of $513.0 million and $420.6 million as of 2017 and 2016, respectively	814,762	906,676
Intangible assets - computer software, net of accumulated amortization of $807.6 million and $757.4 million as of 2017 and 2016, respectively	401,014	423,188
Property and equipment, net of accumulated depreciation and amortization of $509.6 million and $480.7 million as of 2017 and 2016, respectively (Note 7)	280,636	282,345
Contract acquisition costs, net of accumulated amortization of $325.2 million and $309.7 million as of 2017 and 2016, respectively (Note 3)	227,659	235,700
Equity investments, net	158,540	133,556
Deferred income tax assets	7,215	7,055
Other assets	88,205	84,016
Total assets	6,277,014	6,366,177
Current liabilities:
Current portion of long-term borrowings (Note 4)	571,007	48,040
Accounts payable	53,124	38,712
Accrued salaries and employee benefits	41,086	67,655
Current portion of obligations under capital leases and license agreements	3,972	2,687
Other current liabilities (Note 3)	273,991	263,259
Total current liabilities	943,180	420,353
Long-term borrowings, excluding current portion (Note 4)	2,560,277	3,312,215
Deferred income tax liabilities	402,088	419,552
Obligations under capital leases and license agreements, excluding current portion	3,791	1,061
Other long-term liabilities	90,040	88,983
Total liabilities	3,999,376	4,242,164
Redeemable noncontrolling interest in consolidated subsidiary	13,102	24,093
Commitments and contingencies (Note 9)
Shareholders’ Equity
Common stock — $0.10 par value. Authorized 600,000 shares; 202,765 issued as of 2017 and 2016; 184,217 and 183,451 outstanding as of 2017 and 2016, respectively	20,277	20,276
Additional paid-in capital	238,148	279,627
Accumulated other comprehensive loss, net (Note 3)	(45,138)	(56,158)
Treasury stock, at cost (18,548 and 19,314 shares as of 2017 and 2016,	(635,227)	(646,047)
Retained earnings	2,686,476	2,502,222
Total shareholders' equity	2,264,536	2,099,920
Total liabilities and shareholders' equity	$ 6,277,014	$ 6,366,177

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).

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- 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.