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Investment in Unconsolidated Entities (Tables) | 12 Months Ended
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Dec. 31, 2012
Equity Method Investment, Summarized Financial Information [Abstract] |
Equity and cost method investments |
December 31, | 2012 |  | 2011
(Dollars in thousands) |  |  |  |  |
Equity method investments: |  |  |  |  |
| Capital contributions, loans and advances | $ | 10,323 |  | $ | 13,787
| Cumulative share of income |  | 1,017,449 |  |  | 928,019
| Cumulative share of distributions |  | (884,852) |  |  | (805,321)
|  |  | 142,920 |  |  | 136,485
Cost method investments |  | 1,611 |  |  | 1,611
Total investments in unconsolidated entities | $ | 144,531 |  | $ | 138,096
Equity method investments, summarized results of operations |
Year Ended December 31, | 2012 |  | 2011 |  | 2010
(Dollars in thousands) |  |  |  |  |  |  |  |
Results of Operations |  |  |  |  |  |  |  |
| Revenues | $ | 5,804,466 |  | $ | 5,519,024 |  | $ | 4,950,306
| Operating expenses |  | 4,363,399 |  |  | 4,282,277 |  |  | 3,549,098
| Operating income |  | 1,441,067 |  |  | 1,236,747 |  |  | 1,401,208
| Other income, net |  | 4,003 |  |  | 4,976 |  |  | 37,701
| Net income | $ | 1,445,070 |  | $ | 1,241,723 |  | $ | 1,438,909
Equity method investments, summarized financial position |
December 31, | 2012 |  | 2011
(Dollars in thousands) |  |  |  |  |
Assets |  |  |  |  |
| Current | $ | 444,100 |  | $ | 404,751
| Due from affiliates |  | 298,707 |  |  | 199,167
| Property and other |  | 1,896,784 |  |  | 1,935,125
|  | $ | 2,639,591 |  | $ | 2,539,043
Liabilities and Equity |  |  |  |  |
| Current liabilities | $ | 350,067 |  | $ | 300,780
| Deferred credits |  | 80,660 |  |  | 79,787
| Long-term liabilities |  | 21,328 |  |  | 22,943
| Long-term capital lease obligations |  | 405 |  |  | 234
| Partners' capital and shareholders' equity |  | 2,187,131 |  |  | 2,135,299
|  | $ | 2,639,591 |  | $ | 2,539,043

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- Definition The entire disclosure for equity method investments and joint ventures. Equity method investments are investments that give the investor the ability to exercise significant influence over the operating and financial policies of an investee. Joint ventures are entities owned and operated by a small group of businesses as a separate and specific business or project for the mutual benefit of the members of the group. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 35 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=7658923&loc=d3e32787-111569 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 18 -Paragraph 20 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 35 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=7658923&loc=d3e32847-111569 + Details
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- Definition Tabular disclosure of investments in and advances to affiliates. Does not include the tabular disclosure of the disaggregation of investments in and advances to affiliates across legal entities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14) -URI http://asc.fasb.org/extlink&oid=6955306&loc=d3e611322-123010 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 14 -Article 12 + Details
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- Definition Text block disclosure of the aggregated financial position of equity method investments. Aggregated financial position disclosures may include current assets, noncurrent assets, current liabilities, noncurrent liabilities and equity. + References No definition available. + Details
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