Borrowings (Tables)

12 Months Ended

Dec. 31, 2017

Debt Disclosure [Abstract]

Schedule of short-term debt [Table Text Block]

Borrowings consist of the following:

	December 31, 2017		December 31, 2016
Short-term:
Current portion of long-term and short-term borrowings	$	350,402	$	6,950
Commercial paper	230,700		407,600
Notes payable and current maturities of long-term debt	$	581,102	$	414,550

Borrowings [Table Text Block]

			Carrying amount (1)
	Principal		December 31, 2017			December 31, 2016
Long-term:
5.45% 10-year notes due March 15, 2018	$	350,000	$	349,918		$	349,502
2.125% 7-year notes due December 1, 2020 (euro-denominated)	€	300,000	354,349			311,851
4.30% 10-year notes due March 1, 2021	$	450,000	448,831			448,458
3.150% 10-year notes due November 15, 2025	$	400,000	394,695			394,042
1.25% 10-year notes due November 9, 2026 (euro-denominated)	€	600,000	701,058			616,893
6.65% 30-year debentures due June 1, 2028	$	200,000	198,954			198,830
5.375% 30-year debentures due October 15, 2035	$	300,000	295,561			295,316
6.60% 30-year notes due March 15, 2038	$	250,000	247,713			247,593
5.375% 30-year notes due March 1, 2041	$	350,000	343,600			343,323
Other			2,034			1,969
Total long-term debt			3,336,713			3,207,777
Less long-term debt current portion			(350,011		)	(1,140		)
Net long-term debt			$	2,986,702		$	3,206,637

(1) Carrying amount is net of unamortized debt discount and deferred debt issuance costs. Total unamortized debt discounts were

$17.6 million and $18.8 million as of December 31, 2017, and December 31, 2016, respectively. Total deferred debt issuance costs were $14.9 million and $16.5 million as of December 31, 2017, and December 31, 2016, respectively.

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

Scheduled maturities [Table Text Block]

As of December 31, 2017, the future maturities of long-term debt were as follows:

	Future Maturities
2018	$	350,011
2019	1,943
2020	354,349
2021	448,831
2022	—
2023 and thereafter	2,181,579
Total	$	3,336,713