Dividends (Tables)

12 Months Ended

Dec. 31, 2011

Dividends [Abstract]

Dividends Paid In Total And Per Share

	2011		2010		2009
	(Amounts in thousands, except per share data)
Total paid	$	132,142	$	129,863	$	127,617
Per share	$	2.41	$	2.37	$	2.33