|
Consolidated Statements Of Changes In Equity (USD $)
In Thousands |
Total
|
Total Equity [Domain]
|
Total Shareholders' Equity [Member]
|
Common Stock [Member]
|
Retained Earnings [Member]
|
Accumulated Other Comprehensive Income [Member]
|
Noncontrolling Interests [Member]
|
Redeemable Noncontrolling Interests [Member]
|
|---|---|---|---|---|---|---|---|---|
| Balance at Dec. 31, 2010 | $ 3,172,394 | $ 3,171,523 | $ 884,457 | $ 1,735,973 | $ 551,093 | $ 871 | ||
| Balance, redeemable noncontrolling interests at Dec. 31, 2010 | 15,298 | |||||||
| Net income (loss) | 96,179 | 91,505 | 91,850 | 91,850 | 0 | (345) | 4,674 | |
| Change in net unrealized gains on investments, net of taxes | (19,235) | (19,235) | (19,235) | 0 | (19,235) | 0 | 0 | |
| Change in foreign currency translation adjustments, net of taxes | (5,538) | (5,538) | (5,538) | 0 | (5,538) | 0 | 0 | |
| Change in net actuarial pension loss, net of taxes | 1,080 | 1,080 | 1,080 | 0 | 1,080 | 0 | 0 | |
| Comprehensive Income (Loss) | 72,486 | 67,812 | 68,157 | (345) | 4,674 | |||
| Issuance of common stock | 1,182 | 1,182 | 1,182 | 0 | 0 | 0 | 0 | |
| Repurchase of common stock | (33,436) | (33,436) | 0 | (33,436) | 0 | 0 | 0 | |
| Restricted stock units expensed | 4,606 | 4,606 | 4,606 | 0 | 0 | 0 | 0 | |
| Acquisitions | 0 | 0 | 0 | 0 | 0 | 0 | 47,287 | |
| Other | 148 | 148 | 148 | 0 | 0 | 0 | (1,873) | |
| Balance, redeemable noncontrolling interests at Sep. 30, 2011 | 65,386 | |||||||
| Balance at Sep. 30, 2011 | 3,212,706 | 3,212,180 | 890,393 | 1,794,387 | 527,400 | 526 | ||
| Balance at Dec. 31, 2011 | 3,388,115 | 3,388,115 | 3,387,513 | 891,507 | 1,835,086 | 660,920 | 602 | |
| Balance, redeemable noncontrolling interests at Dec. 31, 2011 | 74,231 | 74,231 | ||||||
| Net income (loss) | 200,155 | 195,851 | 196,593 | 196,593 | 0 | (742) | 4,304 | |
| Change in net unrealized gains on investments, net of taxes | 225,766 | 225,766 | 225,766 | 0 | 225,766 | 0 | 0 | |
| Change in foreign currency translation adjustments, net of taxes | 2,927 | 2,969 | 2,969 | 0 | 2,969 | 0 | (42) | |
| Change in net actuarial pension loss, net of taxes | 1,487 | 1,487 | 1,487 | 0 | 1,487 | 0 | 0 | |
| Comprehensive Income (Loss) | 430,335 | 426,073 | 426,815 | (742) | 4,262 | |||
| Issuance of common stock | 8,803 | 8,803 | 8,803 | 0 | 0 | 0 | 0 | |
| Repurchase of common stock | (16,062) | (16,062) | 0 | (16,062) | 0 | 0 | 0 | |
| Restricted stock units expensed | 5,184 | 5,184 | 5,184 | 0 | 0 | 0 | 0 | |
| Acquisitions | 0 | 0 | 0 | 0 | 0 | 0 | 7,896 | |
| Adjustment of redeemable noncontrolling interests | 6,500 | (6,484) | (6,484) | 0 | (6,484) | 0 | 0 | 6,484 |
| Other | 290 | 347 | 347 | 0 | 0 | (57) | (5,135) | |
| Balance, redeemable noncontrolling interests at Sep. 30, 2012 | 87,738 | 87,738 | ||||||
| Balance at Sep. 30, 2012 | $ 3,805,919 | $ 3,805,919 | $ 3,806,116 | $ 905,841 | $ 2,009,133 | $ 891,142 | $ (197) |