Borrowings and Lines of Credit (Tables)

3 Months Ended

Mar. 31, 2012

Borrowings [Abstract]

Borrowings

Borrowings consist of the following:

	March 31, 2012			December 31, 2011
4.875% 10-year notes due October 15, 2015	$	299,293		$	299,244
5.45% 10-year notes due March 15, 2018		348,021			347,938
4.30% 10-year notes due March 1, 2021		449,767			449,761
6.60% 30-year notes due March 15, 2038		247,705			247,683
5.375% 30-year notes due March 1, 2041		345,392			345,352
6.65% 30-year debentures due June 1, 2028		199,422			199,414
5.375% 30-year debentures due October 15, 2035		296,247			296,208
Other		9,420			1,652
Total long-term debt		2,195,267			2,187,252
Less current installments		(3,510	)		(1,022	)
	$	2,191,757		$	2,186,230

Interest expense and interest income

Interest expense and interest income for the three months ended March 31, 2012 and 2011 was as follows:

	Three Months Ended March 31,
	2012			2011
Interest expense	$	31,645		$	31,036
Interest income		(1,618	)		(2,718	)
Interest expense, net	$	30,027		$	28,318