Condensed Consolidated Balance Sheets - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents		$ 145,491	$ 39,359
Available-for-sale securities		3,725	3,801
Accounts receivable, net of allowance for doubtful accounts of $7,606 and $5,995, respectively		267,379	220,668
Prepaid expenses		37,478	31,496
Deferred income taxes, net		4,770	4,772
Income taxes receivable		65,182	65,512
Other current assets		85,962	18,875
Total current assets		609,987	384,483
Noncurrent assets:
Fixed assets, net		386,093	302,273
Intangible assets, net		1,655,565	406,476
Goodwill	[1]	3,057,642	1,207,146
Pension assets		27,026	18,589
Other assets		39,350	26,363
Total assets		5,775,663	2,345,330
Current liabilities:
Accounts payable and accrued liabilities		246,361	180,726
Short-term debt and current portion of long-term debt		1,025,797	336,058
Pension and postretirement benefits, current		1,894	1,894
Fees received in advance		436,001	252,592
Total current liabilities		1,710,053	771,270
Noncurrent liabilities:
Long-term debt		2,293,864	1,100,874
Pension benefits		13,576	13,805
Postretirement benefits		2,302	2,410
Deferred income taxes, net		463,561	202,540
Other liabilities		47,985	43,388
Total liabilities		$ 4,531,341	$ 2,134,287
Commitments and contingencies
Stockholders’ equity:
Common stock, $.001 par value; 1,200,000,000 shares authorized; 544,003,038 shares issued and 168,453,749 and 157,913,227 outstanding, respectively		$ 137	$ 137
Unearned KSOP contributions		(104)	(161)
Additional paid-in capital		1,971,270	1,171,196
Treasury stock, at cost, 375,549,289 and 386,089,811 shares, respectively		(2,559,263)	(2,533,764)
Retained earnings		1,916,155	1,654,149
Accumulated other comprehensive losses		(83,873)	(80,514)
Total stockholders’ equity		1,244,322	211,043
Total liabilities and stockholders’ equity		$ 5,775,663	$ 2,345,330

[1] These balances are net of accumulated impairment charges of $3,244 that occurred prior to December 31, 2013.