Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents (Note 4)	$ 484,581	$ 450,357
Accounts receivable, net of allowances for doubtful accounts and billing adjustments of $5.7 million and $5.9 million as of 2018 and 2017, respectively	485,722	412,322
Contract assets (Note 2)	32,604
Prepaid expenses and other current assets (Note 4)	197,010	216,565
Total current assets	1,199,917	1,079,244
Contract assets (Note 2)	49,956
Goodwill (Note 3)	4,113,669	3,264,071
Other intangible assets, net of accumulated amortization of $757.4 million and $600.9 million as of 2018 and 2017, respectively	855,527	727,146
Intangible assets - computer software, net of accumulated amortization of $913.9 million and $849.3 million as of 2018 and 2017, respectively	440,904	383,715
Property and equipment, net of accumulated depreciation and amortization of $538.5 million and $521.1 million as of 2018 and 2017, respectively	372,900	325,218
Contract cost assets, net of accumulated amortization (Notes 2 and 4)	147,732	258,665
Equity investments, net	170,177	163,518
Deferred income tax assets	6,928	6,091
Other assets	115,334	124,021
Total assets	7,473,044	6,331,689
Current liabilities:
Current portion of long-term borrowings (Note 5)	12,975	559,050
Accounts payable	59,770	62,310
Contract liabilities (Note 2)	50,673	52,913
Accrued salaries and employee benefits	59,951	82,135
Current portion of obligations under capital leases and license agreements (Note 5)	8,196	6,762
Other current liabilities (Note 4)	275,606	225,922
Total current liabilities	467,171	989,092
Long-term borrowings, excluding current portion (Note 5)	3,837,659	2,591,949
Deferred income tax liabilities	394,119	238,317
Contract liabilities (Note 2)	21,730	48,526
Obligations under capital leases and license agreements, excluding current portion (Note 5)	37,156	36,053
Other long-term liabilities	75,027	71,070
Total liabilities	4,832,862	3,975,007
Redeemable noncontrolling interest in consolidated subsidiary		115,689
Commitments and contingencies (Note 10)
Shareholders’ Equity
Common stock- $0.10 par value. Authorized 600,000 shares; 202,765 issued as of 2018 and 2017; 182,441 and 180,903 outstanding as of 2018 and 2017, respectively	20,277	20,277
Additional paid-in capital	178,155	162,806
Accumulated other comprehensive loss, net (Note 4)	(50,086)	(36,148)
Treasury stock, at cost (20,324 and 21,862 shares as of 2018 and 2017, respectively)	(873,946)	(909,960)
Retained earnings	3,365,782	3,004,018
Total shareholders' equity	2,640,182	2,240,993
Total liabilities and shareholders' equity	$ 7,473,044	$ 6,331,689