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Statements of Cash Flow	9 Months Ended
Statements of Cash Flow	Sep. 30, 2013
Supplemental Cash Flow Information [Abstract]
Statements of Cash Flow	Statements of Cash Flow Interest payments were $114,026,000 and $109,045,000 and income taxes paid were $176,632,000 and $114,343,000 in the nine months ended September 30, 2013 and 2012, respectively.