Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents (Note 4)	$ 493,207	$ 450,357
Accounts receivable, net of allowances for doubtful accounts and billing adjustments of $4.7 million and $5.9 million as of 2018 and 2017, respectively	420,124	412,322
Contract assets (Note 2)	40,264
Prepaid expenses and other current assets (Note 4)	224,684	216,565
Total current assets	1,178,279	1,079,244
Contract assets (Note 2)	40,419
Goodwill (Note 3)	4,073,511	3,264,071
Other intangible assets, net of accumulated amortization of $655.6 million and $600.9 million as of 2018 and 2017, respectively	953,397	727,146
Intangible assets - computer software, net of accumulated amortization of $822.6 million and $849.3 million as of 2018 and 2017, respectively	467,747	383,715
Property and equipment, net of accumulated depreciation and amortization of $520.6 million and $521.1 million as of 2018 and 2017, respectively	360,111	325,218
Contract cost assets, net of accumulated amortization (Notes 2 and 4)	151,758	258,665
Equity investments, net	180,841	163,518
Deferred income tax assets	8,104	6,091
Other assets	117,550	124,021
Total assets	7,531,717	6,331,689
Current liabilities:
Current portion of long-term borrowings (Note 5)	807,052	559,050
Accounts payable	66,077	62,310
Contract liabilities (Note 2)	56,880	52,913
Accrued salaries and employee benefits	36,104	82,135
Current portion of obligations under capital leases and license agreements (Note 5)	8,512	6,762
Other current liabilities (Note 4)	243,245	225,922
Total current liabilities	1,217,870	989,092
Long-term borrowings, excluding current portion (Note 5)	3,286,016	2,591,949
Deferred income tax liabilities	370,869	238,317
Contract liabilities (Note 2)	21,925	48,526
Obligations under capital leases and license agreements, excluding current portion (Note 5)	40,520	36,053
Other long-term liabilities	73,943	71,070
Total liabilities	5,011,143	3,975,007
Redeemable noncontrolling interest in consolidated subsidiary	126,000	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; 182,305 and 184,041 outstanding as of 2018 and 2017, respectively	20,277	20,277
Additional paid-in capital	154,897	162,806
Accumulated other comprehensive loss, net (Note 4)	(21,219)	(36,148)
Treasury stock, at cost (21,862 and 19,314 shares as of 2018 and 2017, respectively)	(876,900)	(909,960)
Retained earnings	3,117,519	3,004,018
Total shareholders' equity	2,394,574	2,240,993
Total liabilities and shareholders' equity	$ 7,531,717	$ 6,331,689