Long-Term Debt Long Term Debt (Details) (USD $)	6 Months Ended			6 Months Ended																															36 Months Ended	60 Months Ended	61 Months Ended	122 Months Ended			9 Months Ended	21 Months Ended				6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010	Jun. 30, 2011	Jun. 30, 2011 June 30 2011 [Member] Line of Credit [Member] Credit Agreement [Member] Minimum [Member] Alternate Base Rate [Member]	Jun. 30, 2011 June 30 2011 [Member] Line of Credit [Member] Credit Agreement [Member] Minimum [Member] Adjusted LIBO [Member]	Jun. 30, 2011 June 30 2011 [Member] Line of Credit [Member] Credit Agreement [Member] Maximum [Member] Alternate Base Rate [Member]	Jun. 30, 2011 June 30 2011 [Member] Line of Credit [Member] Credit Agreement [Member] Maximum [Member] Adjusted LIBO [Member]	Jun. 30, 2011 June 30 2011 [Member] Line of Credit [Member] Credit Agreement [Member] Alternate Base Rate [Member]	Jun. 30, 2011 June 30 2011 [Member] Line of Credit [Member] Credit Agreement [Member] Adjusted LIBO [Member]	Jun. 30, 2011 Line of Credit [Member] Revolving Line of Credit March 2016 [Member]	Dec. 31, 2010 Line of Credit [Member] Revolving Line of Credit March 2016 [Member]	Jun. 30, 2011 Line of Credit [Member] Line of Credit due July 2012 [Member]	Dec. 31, 2010 Line of Credit [Member] Line of Credit due July 2012 [Member]	Jun. 30, 2011 Acquisition Notes [Member] Weighted Average Interest Rate Acquisition Notes [Member]	Dec. 31, 2010 Acquisition Notes [Member] Weighted Average Interest Rate Acquisition Notes [Member]	Jun. 30, 2011 Acquisition Notes [Member] Non Interest Bearing Acquisition Note [Member]	Dec. 31, 2010 Acquisition Notes [Member] Non Interest Bearing Acquisition Note [Member]	Jun. 30, 2011 Notes Payable to Banks [Member] Senior Indenture June 2021 [Member]	Dec. 31, 2010 Notes Payable to Banks [Member] Senior Indenture June 2021 [Member]	Jun. 30, 2011 Notes Payable to Banks [Member] Senior Debentures August 2014 [Member]	Dec. 31, 2010 Notes Payable to Banks [Member] Senior Debentures August 2014 [Member]	Jun. 30, 2011 Notes Payable to Banks [Member] Senior Debentures April 2028 [Member]	Dec. 31, 2010 Notes Payable to Banks [Member] Senior Debentures April 2028 [Member]	Jun. 30, 2011 Subordinated Debt [Member] Deferrable Interest Subordinated Noted Due April 2012 [Member]	Dec. 31, 2010 Subordinated Debt [Member] Deferrable Interest Subordinated Noted Due April 2012 [Member]	Jun. 30, 2011 Bank Loans [Member] Term Loan due March 2016 [Member]	Dec. 31, 2010 Bank Loans [Member] Term Loan due March 2016 [Member]	Jun. 30, 2011 Bank Loans [Member] Term Loan Due April 2016 [Member]	Dec. 31, 2010 Bank Loans [Member] Term Loan Due April 2016 [Member]	Jun. 30, 2011 Promissory Note To FAFC [Member] Notes Payable, Other Payables [Member]	Dec. 31, 2010 Promissory Note To FAFC [Member] Notes Payable, Other Payables [Member]	Jun. 30, 2011 Notes Payable, Other Payables [Member] Various Interest Rate Loans [Member]	Dec. 31, 2010 Notes Payable, Other Payables [Member] Various Interest Rate Loans [Member]	Jun. 01, 2014 June 30 2011 [Member] Senior Indenture June 2021 [Member]	Jun. 01, 2021 June 30 2011 [Member] Senior Indenture June 2021 [Member]	Jun. 01, 2016 June 30 2011 [Member] Senior Indenture June 2021 [Member]	Jun. 02, 2021 June 30 2011 [Member] Senior Indenture June 2021 [Member]	May 21, 2011 Senior Indenture June 2021 [Member]	May 23, 2011 June 30 2011 [Member] Credit Agreement [Member]	Jun. 30, 2014 June 30 2011 [Member] Term Loan due March 2016 [Member]	Jun. 30, 2016 June 30 2011 [Member] Term Loan due March 2016 [Member]	Jun. 30, 2013 June 30 2011 [Member] Term Loan due March 2016 [Member]	May 23, 2011 June 30 2011 [Member] Term Loan due March 2016 [Member]	May 23, 2011 June 30 2011 [Member] Revolving Line of Credit March 2016 [Member]	Jun. 30, 2011 June 30 2011 [Member] Revolving Line of Credit March 2016 [Member] Minimum [Member]	Jun. 30, 2011 June 30 2011 [Member] Revolving Line of Credit March 2016 [Member] Maximum [Member]	May 23, 2011 June 30 2011 [Member] Multi Currency Sub Facility [Member]	May 23, 2011 June 30 2011 [Member] Letter Of Credit Sub Facility [Member]
Debt Instrument [Line Items]
Total long-term Debt	$ 939,140,000		$ 720,889,000								$ 53,610,000	$ 0	$ 0	$ 200,000,000	$ 0	$ 44,624,000	$ 12,870,000	$ 0	$ 400,000,000	$ 0	$ 1,175,000	$ 1,175,000	$ 59,645,000	$ 59,645,000	$ 34,768,000	$ 34,768,000	$ 350,000,000	$ 0	$ 0	$ 348,250,000	$ 17,047,000	$ 18,787,000	$ 10,025,000	$ 13,640,000
Less current portion of long-term debt	29,473,000		233,452,000
Long-term debt, net of current portion	909,667,000		487,437,000
Debt Instrument, Face Amount																																							400,000,000
Debt Instrument, Interest Rate, Stated Percentage																																							7.25%
Debt Issuance Redemption Discount Premium Percentage Of Principle Amount																																			107.25%	103.625%	100.00%
Percentage Of Original Principle Amount Able To Be Redeemed																																			35.00%
Repurchase Price Required Percentage To Repurchase																																						101.00%
Line of Credit Facility, Maximum Borrowing Capacity																																								1,400,000,000				350,000,000	550,000,000
Line Of Credit Facility Alternate Base Rate Borrowings					0.75%	1.75%	1.75%	2.75%	1.00%	2.00%
Line Of Credit Facility Additional Sub Facility Amount																																																100,000,000	50,000,000
Line of Credit Facility, Commitment Fee Percentage																																														0.30%	0.50%
Line Of Credit Facility Fair Market Value Of Collateral																																								10,000,000
Line of Credit Facility, Periodic Payment																																									8,800,000	13,100,000	4,400,000
Line of Credit Facility, Remaining Borrowing Capacity											496,400,000
Write off of Deferred Debt Issuance Cost	10,200,000
Payments of Debt Issuance Costs	21,636,000	14,776,000
Payments to Acquire Interest in Joint Venture				20,000,000
Joint Venture Deferred Purchase Price				15,000,000
Joint Venture Deferred Payment Discounted Amount				$ 12,700,000