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Reconciliation of Total Segments to Income Before Provision for Taxes and Total Assets (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 12 Months Ended | ||||||||||||||||||||||||
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Dec. 31, 2013
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Sep. 30, 2013
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Jun. 30, 2013
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Mar. 31, 2013
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Dec. 31, 2012
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Sep. 30, 2012
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Jun. 30, 2012
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Mar. 31, 2012
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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| Segment Reporting Information [Line Items] | ||||||||||||||||||||||||||
| Revenues | $ 2,709,380 | $ 1,216,845 | $ 1,440,470 | $ 1,246,473 | $ 1,217,113 | $ 1,223,089 | $ 627,203 | $ 952,036 | $ 6,613,168 | $ 4,019,441 | $ 3,252,576 | |||||||||||||||
| Expenses | 1,330,472 | 786,405 | 914,762 | 835,101 | 885,679 | 851,390 | 739,819 | 783,793 | 3,866,740 | 3,260,681 | 3,388,069 | |||||||||||||||
| Other Income | 402,133 | 256,145 | 212,751 | |||||||||||||||||||||||
| Economic Income (Loss) | 3,148,561 | 1,014,905 | 77,258 | |||||||||||||||||||||||
| Total Assets | 29,678,606 | 28,931,552 | 29,678,606 | 28,931,552 | ||||||||||||||||||||||
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Operating Segments
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| Segment Reporting Information [Line Items] | ||||||||||||||||||||||||||
| Revenues | 6,611,500 | 4,066,774 | 3,283,594 | |||||||||||||||||||||||
| Expenses | 3,015,461 | 2,025,767 | 1,698,623 | |||||||||||||||||||||||
| Economic Income (Loss) | 3,596,039 | 2,041,007 | 1,584,971 | |||||||||||||||||||||||
| Total Assets | 16,429,521 | 13,855,479 | 16,429,521 | 13,855,479 | ||||||||||||||||||||||
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Consolidation Adjustments and Reconciling Items
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| Segment Reporting Information [Line Items] | ||||||||||||||||||||||||||
| Revenues | 1,668 | [1] | (47,333) | [1] | (31,018) | [1] | ||||||||||||||||||||
| Expenses | 851,279 | [2] | 1,234,914 | [2] | 1,689,446 | [2] | ||||||||||||||||||||
| Other Income | 402,133 | [3] | 256,145 | [3] | 212,751 | [3] | ||||||||||||||||||||
| Economic Income (Loss) | (447,478) | [4] | (1,026,102) | [4] | (1,507,713) | [4] | ||||||||||||||||||||
| Total Assets | $ 13,249,085 | [5] | $ 15,076,073 | [5] | $ 13,249,085 | [5] | $ 15,076,073 | [5] | ||||||||||||||||||
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