Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents (Note 2)	$ 458,220	$ 471,156
Accounts receivable, net of allowances for doubtful accounts and billing adjustments of $6.1 million and $6.0 million as of 2019 and 2018, respectively	513,712	450,322
Contract assets (Note 3)	43,847	30,950
Prepaid expenses and other current assets (Note 2)	224,048	188,355
Total current assets	1,239,827	1,140,783
Contract assets (Note 3)	56,925	47,839
Goodwill	4,114,851	4,114,838
Other intangible assets, net of accumulated amortization of $891.1 million and $802.0 million as of 2019 and 2018, respectively	703,617	796,702
Intangible assets - computer software, net of accumulated amortization of $955.2 million and $893.4 million as of 2019 and 2018, respectively	520,494	534,536
Property and equipment, net of accumulated depreciation and amortization of $530.4 million and $522.7 million as of 2019 and 2018, respectively (Note 4)	373,868	383,074
Operating lease right-of-use assets, net (Note 4)	198,539
Contract cost assets, net of accumulated amortization	148,938	145,598
Equity investments, net	206,504	180,661
Deferred income tax assets	7,516	7,773
Other assets	135,727	116,905
Total assets	7,706,806	7,468,709
Current liabilities:
Accounts payable	57,911	97,956
Contract liabilities (Note 3)	51,553	47,227
Current portion of operating lease liabilities (Note 4)	43,346
Accrued salaries and employee benefits	34,922	73,143
Current portion of long-term borrowings (Note 5)	17,811	20,807
Current portion of obligations under finance leases and license agreements (Note 4)	17,712	8,318
Other current liabilities (Note 2)	278,072	268,150
Total current liabilities	501,327	515,601
Long-term borrowings, excluding current portion (Note 5)	4,003,248	3,843,394
Deferred income tax liabilities	401,486	380,278
Operating lease liabilities, excluding current portion (Note 4)	167,102
Obligations under finance leases and license agreements, excluding current portion (Note 4)	39,490	46,147
Contract liabilities (Note 3)	25,281	21,489
Finance Lease And License Agreement, Liability, Noncurrent	39,490	46,147
Other long-term liabilities	74,278	75,894
Total liabilities	5,212,212	4,882,803
Commitments and contingencies (Note 6)
Shareholders' Equity
Common stock- $0.10 par value. Authorized 600,000 shares; 202,765 issued as of 2019 and 2018; 00 and 180,586 outstanding as of 2019 and 2018, respectively	20,277	20,277
Additional paid-in capital	203,098	189,889
Accumulated other comprehensive loss, net (Notes 1 and 2)	(64,200)	(60,223)
Treasury stock, at cost (25,788 and 22,179 shares as of 2019 and 2018, respectively	(1,426,177)	(1,042,687)
Retained earnings	3,761,596	3,478,650
Total shareholders' equity	2,494,594	2,585,906
Total liabilities and shareholders' equity	$ 7,706,806	$ 7,468,709