Supplemental Cash Flow Information (Details) (USD $)	6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013
Supplemental Cash Flow Information [Abstract]
Interest (1)	$ 102,311,000	[1]	$ 121,800,000	[1]
Income Taxes, Net of Refunds Received	247,494,000		173,411,000
Interest Costs Capitalized	28,000,000		22,000,000
Accrued Capital Expenditures	$ 872,000,000		$ 724,000,000

[1] (1)Net of capitalized interest of $28 million and $22 million for the six months ended June 30, 2014 and 2013, respectively.