6. Borrowings

Borrowings consist of the following:



	September 30, 2012			December 31, 2011
4.875% 10-year notes due October 15, 2015	$	299,392		$	299,244
5.45% 10-year notes due March 15, 2018	348,185			347,938
4.30% 10-year notes due March 1, 2021	449,780			449,761
6.60% 30-year notes due March 15, 2038	247,749			247,683
5.375% 30-year notes due March 1, 2041	345,471			345,352
6.65% 30-year debentures due June 1, 2028	199,440			199,414
5.375% 30-year debentures due October 15, 2035	296,327			296,208
Other	8,952			1,652
Total long-term debt	2,195,296			2,187,252
Less current installments	(3,134		)	(1,022		)
	$	2,192,162		$	2,186,230

The Company maintains a $1 billion unsecured revolving credit facility which expires on November 10, 2016. The Company primarily uses this facility as liquidity back-up for its commercial paper program and has not drawn down any loans under the $1 billion facility and does not anticipate doing so. The Company generally uses commercial paper borrowings for general corporate purposes, funding of acquisitions and the repurchases of its common stock.

Interest expense and interest income for the three and nine months ended September 30, 2012 and 2011 were as follows:



	Three Months Ended September 30,						Nine Months Ended September 30,
	2012			2011			2012			2011
Interest expense	$	31,103		$	31,700		$	94,226		$	93,816
Interest income	(715		)	(1,639		)	(4,094		)	(7,280		)
Interest expense, net	$	30,388		$	30,061		$	90,132		$	86,536