Financing (Tables)

12 Months Ended

Dec. 31, 2012

Financing

Outstanding financing facilities

	December 31,
	2012		2011
Revolving Credit Facility	$	-	$	-
4.875% Senior Notes due 2021 (1), effective interest rate of 4.973%		497,173		496,824
4.625% Senior Notes due 2021 (2), effective interest rate of 4.649%		299,545		299,493
3.800% Senior Notes due 2021 (3), effective interest rate of 3.845%		298,916		-
(1) Net of unamortized discount of  $2.8 million and $3.2 million as of December 31, 2012 and 2011, respectively.
(2) Net of unamortized discount of $0.5 million and $0.5 million as of December 31, 2012 and 2011, respectively.
(3) Net of unamortized discount of $1.1 million as of December 31, 2012.

Principal maturities of financing facilities

2013	$	-
2014		-
2015		-
2016		-
2017		-
Thereafter		1,100,000
Total	$	1,100,000