Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash Flows from Operating Activities
Net Income	$ 89,600	$ 63,085
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and goodwill and other long-lived asset impairment	50,044	57,113
Net pension benefit	(36,868)	(29,517)
Loss on marketable equity securities, net	16,656	0
Stock-based compensation expense, net	3,262	5,204
(Gain) loss on disposition of businesses, property, plant and equipment and investments, net	(12,598)	402
Debt extinguishment costs	10,563	0
Foreign exchange loss (gain)	2,089	(5,194)
Equity in earnings of affiliates, net of distributions	(2,945)	(1,966)
(Benefit) provision for deferred income taxes	(4,140)	14,370
Change in operating assets and liabilities:
Accounts receivable, net	79,007	122,122
Accounts payable and accrued liabilities	(72,017)	(63,654)
Deferred revenue	(46,193)	(29,706)
Income taxes receivable	26,323	6,374
Other assets and other liabilities, net	(33,980)	(7,425)
Other	1,735	360
Net Cash Provided by Operating Activities	70,538	131,568
Cash Flows from Investing Activities
Proceeds from sales of marketable equity securities	66,741	0
Purchases of property, plant and equipment	(40,506)	(29,947)
Advance related to Kaplan University transaction and loan to affiliate	(28,061)	0
Investments in certain businesses, net of cash acquired	(24,717)	(299,938)
Net (payments) proceeds from disposition of businesses, property, plant and equipment and investments	(13,332)	1,760
Investments in equity affiliates, cost method and other investments	(6,310)	(10,527)
Return of investment in equity affiliates	2,056	3,527
Net Cash Used in Investing Activities	(44,129)	(335,125)
Cash Flows from Financing Activities
Repayments of borrowings and early redemption premium	(410,569)	(1,214)
Issuance of borrowings	400,000	0
Common shares repurchased	(94,092)	(395)
Dividends paid	(14,453)	(14,201)
Payments of debt financing costs	(6,924)	0
Other	(844)	(3,329)
Net Cash Used in Financing Activities	(126,882)	(19,139)
Effect Of Currency Exchange Rate Change	(4,352)	7,026
Net Decrease in Cash and Cash Equivalents and Restricted Cash	(104,825)	(215,670)
Beginning Cash and Cash Equivalents and Restricted Cash	407,566	670,816
Ending Cash and Cash Equivalents and Restricted Cash	$ 302,741	$ 455,146