Noncontrolling Interest (Derivatives at LVE) (Details) (Interest Rate Swap, USD $) In Thousands, unless otherwise specified	Jun. 30, 2011	Jun. 29, 2011	Dec. 31, 2007 LVE	Dec. 31, 2007 LVE Designated as Hedging Instrument	Dec. 31, 2007 LVE Not Designated as Hedging Instrument
Derivative [Line Items]
Notional Amount	$ 0	$ 500,000	$ 231,986	$ 131,986	$ 100,000
Fixed Rate				4.59%	3.42%

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

Name:	invest_DerivativeNotionalAmount
Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant