Reconciliation of Total Segments to Income Before Provision for Taxes and Total Assets (Detail) - Entity [Domain] - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||||||||||||||||||||||||
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Jun. 30, 2015 |
Jun. 30, 2014 |
Jun. 30, 2015 |
Jun. 30, 2014 |
Dec. 31, 2014 |
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Segment Reporting Information [Line Items] | ||||||||||||||||||||||||||
Revenues | $ 1,225,202 | $ 2,257,860 | $ 3,737,560 | $ 3,784,528 | ||||||||||||||||||||||
Expenses | 914,432 | 1,089,781 | 2,057,000 | 1,977,632 | ||||||||||||||||||||||
Other Income | 82,015 | 138,585 | 175,570 | 208,740 | ||||||||||||||||||||||
Income Before Provision for Taxes | 392,785 | 1,306,664 | 1,856,130 | 2,015,636 | ||||||||||||||||||||||
Total Assets | 24,683,501 | 24,683,501 | $ 31,497,097 | |||||||||||||||||||||||
Operating Segments | ||||||||||||||||||||||||||
Segment Reporting Information [Line Items] | ||||||||||||||||||||||||||
Revenues | 1,202,221 | 2,236,959 | 3,710,940 | 3,745,778 | ||||||||||||||||||||||
Expenses | 673,194 | 885,964 | 1,550,130 | 1,569,537 | ||||||||||||||||||||||
Income Before Provision for Taxes | 529,027 | 1,350,995 | 2,160,810 | 2,176,241 | ||||||||||||||||||||||
Total Assets | 19,852,929 | 19,852,929 | ||||||||||||||||||||||||
Consolidation Adjustments and Reconciling Items | ||||||||||||||||||||||||||
Segment Reporting Information [Line Items] | ||||||||||||||||||||||||||
Revenues | 22,981 | [1] | 20,901 | [1] | 26,620 | [2] | 38,750 | [2] | ||||||||||||||||||
Expenses | [3] | 241,238 | 203,817 | 506,870 | 408,095 | |||||||||||||||||||||
Other Income | 82,015 | [4] | 138,585 | [4] | 175,570 | [5] | 208,740 | [5] | ||||||||||||||||||
Income Before Provision for Taxes | (136,242) | [6] | $ (44,331) | [6] | (304,680) | [7] | $ (160,605) | [7] | ||||||||||||||||||
Total Assets | [8] | $ 4,830,572 | $ 4,830,572 | |||||||||||||||||||||||
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