8. Borrowings

Borrowings consist of the following:



	March 31, 2013		December 31, 2012
Short-term
Current portion of long-term debt	$	4,198	$	3,266
Commercial paper	698,400		607,500
	$	702,598	$	610,766



	March 31, 2013			December 31, 2012
Long-term
4.875% 10-year notes due October 15, 2015	$	299,490		$	299,441
5.45% 10-year notes due March 15, 2018	348,350			348,268
4.30% 10-year notes due March 1, 2021	449,793			449,787
6.60% 30-year notes due March 15, 2038	247,793			247,771
5.375% 30-year notes due March 1, 2041	345,551			345,511
6.65% 30-year debentures due June 1, 2028	199,457			199,448
5.375% 30-year debentures due October 15, 2035	296,406			296,367
Other	6,879			6,023
Total long-term debt	2,193,719			2,192,616
Less current installments	(4,198		)	(3,266		)
	$	2,189,521		$	2,189,350

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 months ended March 31, 2013 and 2012 were as follows:



	Three Months Ended March 31,
	2013			2012
Interest expense	$	30,872		$	31,638
Interest income	(628		)	(1,607		)
Interest expense, net	$	30,244		$	30,031