Borrowings (Tables)

12 Months Ended

Dec. 31, 2015

Debt Disclosure [Abstract]

Schedule of short-term debt [Table Text Block]

Borrowings consist of the following:

	December 31, 2015		December 31, 2014
Short-term:
Current portion of long-term debt	$	122	$	299,956
Commercial paper	151,000		478,000
	$	151,122	$	777,956

Borrowings [Table Text Block]

	December 31, 2015			December 31, 2014
Long-term:
4.875% 10-year notes due October 15, 2015	$	—		$	299,836
5.45% 10-year notes due March 15, 2018	349,258			348,928
2.125% 7-year notes due December 1, 2020 (euro-denominated)	328,592			363,970
4.30% 10-year notes due March 1, 2021	449,865			449,839
3.150% 10-year notes due November 15, 2025	396,951			—
6.65% 30-year debentures due June 1, 2028	199,552			199,517
5.375% 30-year debentures due October 15, 2035	296,844			296,685
6.60% 30-year notes due March 15, 2038	248,036			247,948
5.375% 30-year notes due March 1, 2041	345,989			345,830
Other	2,377			444
Total long-term debt	2,617,464			2,552,997
Less current portion	(122		)	(299,956		)
	$	2,617,342		$	2,253,041

Schedule of interest expense and interest income [Table Text Block]

Interest expense and interest income for the years ended December 31, 2015, 2014 and 2013 were as follows:

	Years Ended December 31,
	2015			2014			2013
Interest expense	$	131,676		$	131,689		$	124,535
Interest income	(4,419		)	(4,510		)	(3,881		)
Interest expense, net	$	127,257		$	127,179		$	120,654

Scheduled maturities [Table Text Block]

Scheduled maturities of long-term debt are as follows for the years ending December 31:

2016	$	122
2017	122
2018	349,290
2019	—
2020	328,592
2021 and thereafter	1,939,338
	$	2,617,464