Income Taxes - U.S. and Foreign Earnings from Continuing Operations before Taxes (Details 7) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
U.S. and foreign earnings from continuing operations before taxes
U.S. earnings before taxes									$ 12,520	$ 332,497	$ 303,070
Foreign earnings before taxes									714,032	872,412	874,529
EARNINGS FROM CONTINUING OPERATIONS BEFORE TAXES	$ (39,300)	$ 278,200	$ 238,800	$ 248,900	$ 304,700	$ 343,400	$ 285,300	$ 271,500	726,552	$ 1,204,909	$ 1,177,599
Pension settlement
Pre-tax pension settlement charge									$ 239,896