Borrowings (Tables)

9 Months Ended

Sep. 30, 2013

Debt Disclosure [Abstract]

Schedule of Short-term Debt

Borrowings consist of the following:

	September 30, 2013		December 31, 2012
Short-term
Current portion of long-term debt	$	3,235	$	3,266
Commercial paper	668,900		607,500
	$	672,135	$	610,766

Schedule of Long-term Debt Instruments

	September 30, 2013			December 31, 2012
Long-term
4.875% 10-year notes due October 15, 2015	$	299,589		$	299,441
5.45% 10-year notes due March 15, 2018	348,515			348,268
4.30% 10-year notes due March 1, 2021	449,806			449,787
6.60% 30-year notes due March 15, 2038	247,837			247,771
5.375% 30-year notes due March 1, 2041	345,631			345,511
6.65% 30-year debentures due June 1, 2028	199,474			199,448
5.375% 30-year debentures due October 15, 2035	296,486			296,367
Other	6,053			6,023
Total long-term debt	2,193,391			2,192,616
Less current installments	(3,235		)	(3,266		)
	$	2,190,156		$	2,189,350

Schedule of Interest expense and interest income

Interest expense and interest income for the three and nine months ended September 30, 2013 and 2012 were as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2013			2012			2013			2012
Interest expense	$	31,004		$	31,099		$	92,917		$	94,210
Interest income	(767		)	(700		)	(2,156		)	(4,065		)
Interest expense, net	$	30,237		$	30,399		$	90,761		$	90,145