Income Taxes - Narrative (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income tax expense settlement related to prior year taxes in international segments	$ 6,000,000
Recognized tax benefits			$ 7,200,000
Net operating loss and other carryforwards expiring between 2016 and 2025	127,000,000
Deferred tax liabilities related to foreign earnings	4,300,000	$ 2,600,000
Undistributed earnings of foreign subsidiaries	1,600,000,000
Cash payments for income taxes	134,000,000	125,500,000	99,000,000
Cash refunds for income taxes	19,900,000	13,900,000	12,100,000
Income tax benefit associated with dispositions of employee stock options	3,200,000	2,900,000	900,000
Unrecognized tax benefits	56,300,000	58,500,000	33,800,000	$ 47,900,000
Unrecognized tax benefits that would impact effective tax rate	37,700,000
Amount of unrecognized tax benefit that will decrease within 12 months	16,500,000
Total interest expense, net of tax benefits related to remaining tax uncertainties	1,100,000	100,000
Total interest benefit, net of tax benefits related to remaining tax uncertainties			1,800,000
Penalty amounts recognized	0	100,000	2,600,000
Accrued interest related to income tax uncertainties	7,000,000	5,600,000
Accrued penalties related to income tax uncertainties	0	0
Domestic
Domestic and foreign net operating loss carryforwards	88,200,000	98,400,000
Foreign
Domestic and foreign net operating loss carryforwards	$ 205,200,000	243,200,000
Strategic Services
Income tax benefits from value decline		$ 15,200,000
Publishing and Retail Services
Income tax benefits from value decline and reorganization			$ 58,500,000