7. Accumulated Other Comprehensive Income 7. Accumulated Other Comprehensive Income (Details) (USD $)	3 Months Ended		6 Months Ended			6 Months Ended				6 Months Ended				3 Months Ended		6 Months Ended						3 Months Ended		6 Months Ended						6 Months Ended				6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Jun. 30, 2014 Accumulated Translation Adjustment [Member]	Jun. 30, 2013 Accumulated Translation Adjustment [Member]	Dec. 31, 2013 Accumulated Translation Adjustment [Member]	Dec. 31, 2012 Accumulated Translation Adjustment [Member]	Jun. 30, 2014 Accumulated Defined Benefit Plans Adjustment [Member]	Jun. 30, 2013 Accumulated Defined Benefit Plans Adjustment [Member]	Dec. 31, 2013 Accumulated Defined Benefit Plans Adjustment [Member]	Dec. 31, 2012 Accumulated Defined Benefit Plans Adjustment [Member]	Jun. 30, 2014 Accumulated Defined Benefit Plans Adjustment [Member] Reclassification Out Of Accumulated Other Comprehensive Income [Member]	Jun. 30, 2013 Accumulated Defined Benefit Plans Adjustment [Member] Reclassification Out Of Accumulated Other Comprehensive Income [Member]	Jun. 30, 2014 Accumulated Defined Benefit Plans Adjustment [Member] Reclassification Out Of Accumulated Other Comprehensive Income [Member]	Jun. 30, 2013 Accumulated Defined Benefit Plans Adjustment [Member] Reclassification Out Of Accumulated Other Comprehensive Income [Member]	Jun. 30, 2014 Accumulated Net Unrealized Investment Gain (Loss) [Member]	Jun. 30, 2013 Accumulated Net Unrealized Investment Gain (Loss) [Member]	Dec. 31, 2013 Accumulated Net Unrealized Investment Gain (Loss) [Member]	Dec. 31, 2012 Accumulated Net Unrealized Investment Gain (Loss) [Member]	Jun. 30, 2014 Accumulated Net Unrealized Investment Gain (Loss) [Member] Reclassification Out Of Accumulated Other Comprehensive Income [Member]	Jun. 30, 2013 Accumulated Net Unrealized Investment Gain (Loss) [Member] Reclassification Out Of Accumulated Other Comprehensive Income [Member]	Jun. 30, 2014 Accumulated Net Unrealized Investment Gain (Loss) [Member] Reclassification Out Of Accumulated Other Comprehensive Income [Member]	Jun. 30, 2013 Accumulated Net Unrealized Investment Gain (Loss) [Member] Reclassification Out Of Accumulated Other Comprehensive Income [Member]	Jun. 30, 2014 Parent [Member]	Jun. 30, 2013 Parent [Member]	Dec. 31, 2013 Parent [Member]	Dec. 31, 2012 Parent [Member]	Jun. 30, 2014 Noncontrolling Interest [Member]	Jun. 30, 2013 Noncontrolling Interest [Member]	Dec. 31, 2013 Noncontrolling Interest [Member]	Dec. 31, 2012 Noncontrolling Interest [Member]	Jun. 30, 2014 Accumulated Other Comprehensive Income (Loss) [Member]	Jun. 30, 2013 Accumulated Other Comprehensive Income (Loss) [Member]	Dec. 31, 2013 Accumulated Other Comprehensive Income (Loss) [Member]	Dec. 31, 2012 Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Selling, general and administrative expense	$ (195,838,000)	$ (195,331,000)	$ (398,113,000)	$ (381,248,000)										$ (100,000)	$ (100,000)	$ (200,000)	$ (200,000)
Other (income) expense, net	(8,388,000)	(8,644,000)	(9,049,000)	(10,044,000)																		0	0	0	(200,000)
Accumulated other comprehensive income	351,285,000		351,285,000		340,717,000	197,000,000	137,100,000	189,400,000	172,900,000	(7,900,000)	(7,800,000)	(8,100,000)	(8,100,000)					162,200,000	138,000,000	159,400,000	109,700,000					351,300,000	267,300,000	340,700,000	274,500,000	0	0	0	(200,000)	351,300,000	267,300,000	340,700,000	274,300,000
Other Comprehensive Income (Loss), before Reclassifications, before Tax						7,600,000	(35,600,000)			0	100,000							4,300,000	45,100,000							11,900,000	9,600,000			0	0			11,900,000	9,600,000
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax						0	(200,000)			200,000	200,000							0	(200,000)							200,000	(200,000)			0	200,000			200,000	0
Other Comprehensive Income (Loss), Tax						0	0			0	0							(1,500,000)	(16,600,000)							(1,500,000)	(16,600,000)			0	0			(1,500,000)	(16,600,000)
Total other comprehensive income (loss) net of tax	$ (21,313,000)	$ (2,043,000)	$ 10,568,000	$ (6,974,000)		$ 7,600,000	$ (35,800,000)			$ 200,000	$ 300,000							$ 2,800,000	$ 28,300,000							$ 10,600,000	$ (7,200,000)			$ 0	$ 200,000			$ 10,600,000	$ (7,000,000)