Debt, Financing Arrangements and Leases (Tables)

12 Months Ended

Dec. 31, 2013

Debt Disclosure [Abstract]

Long-term debt

At December 31, 2013 and 2012, long-term debt issues were outstanding as follows (in thousands):

	2013			2012
Debentures:
7.08% due 2026	$	7,500		$	7,500
7.25% due 2026	200,000			200,000
Total debentures	207,500			207,500
Notes:
6.4% due 2016	200,000			200,000
6.05% due 2018	250,000			250,000
5.4% due 2041	375,000			375,000
4.45% due 2042	400,000			400,000
Total notes	1,225,000			1,225,000
Total long-term debt issues	1,432,500			1,432,500
Unamortized debt premium and discount	(4,145		)	(4,177		)
Total long-term debt, less current maturities	$	1,428,355		$	1,428,323

Maturities of long-term debt

Aggregate minimum maturities (face value) applicable to long-term debt outstanding at December 31, 2013, for the next five years, are as follows (in thousands):

2016:     6.4% Notes	$200,000
2018:     6.05% Notes	$250,000

Leases [Abstract]

Future minimum lease payments

The future minimum lease payments under our various operating leases are as follows (in thousands):

2014	$	10,154
2015	10,025
2016	10,025
2017	9,971
2018	9,956
Thereafter	22,401
Total net minimum obligations	$	72,532