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Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2014

Long-term Purchase Commitment [Table Text Block]

	Amount of Commitment Expiration Per Period
	Total Amounts Committed				Less Than 1  Year				1-3 Years				3-5 Years				Beyond 5  Years
Letters of Credit:
Employee-Related	$	150,042			$	124,536			$	25,506			$	—			$	—
Environmental	5,509				5,509				—				—				—
Other	149,097				141,337				7,760				—				—
Total Letters of Credit	304,648				271,382				33,266				—				—
Surety Bonds:
Employee-Related	223,579				223,579				—				—				—
Environmental	598,877				598,877				—				—				—
Other	24,437				24,436				—				—				1
Total Surety Bonds	846,893				846,892				—				—				1
Guarantees:
Coal	133,600				100,200				33,400				—				—
Other	61,571				34,974				8,822				8,367				9,408
Total Guarantees	195,171				135,174				42,222				8,367				9,408
Total Commitments	$	1,346,712			$	1,253,448			$	75,488			$	8,367			$	9,409

Unrecorded Unconditional Purchase Obligations Disclosure

. These purchase obligations are not recorded on the Consolidated Balance Sheets. As of December 31, 2014, the purchase obligations for each of the next five years and beyond were as follows:

Obligations Due	Amount
Less than 1 year	$	250,471
1 - 3 years	338,312
3 - 5 years	181,608
More than 5 years	455,414
Total Purchase Obligations	$	1,225,805

X

- Definition

Tabular disclosure of key provisions of an arrangement under which the entity has agreed to purchase goods or services over a period of time greater than one year or the normal operating cycle, if longer, including the item for which expenditures will be made, minimum quantities, milestones, time period and committed amount.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of unconditional purchase obligations that are not recognized as a liability on the balance sheet, including the nature and significant terms of an unconditional purchase obligation; the amount of the fixed and determinable portion of the obligation as of the date of the latest balance sheet presented in the aggregate and, if determinable, for each of the five succeeding fiscal years; the nature of any variable components of the obligation; the amount purchased under the obligation (for example, the take-or-pay or throughput contract) for the reporting period; and may include the amount of imputed interest necessary to reduce the obligation to present value.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 440

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25287-109308



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 440

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25336-109308

+ Details

Name:	us-gaap_UnrecordedUnconditionalPurchaseObligationsDisclosureTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration