INFORMATION ABOUT RECEIVABLES, REVENUES, AND SERVICES. (Investment Advisory Services) (Detail) (USD $)
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3 Months Ended | 9 Months Ended | |||
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Sep. 30, 2013
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Sep. 30, 2012
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Sep. 30, 2013
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Sep. 30, 2012
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Dec. 31, 2012
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Investment advisory services | |||||
Revenues from advisory services | $ 768,300,000 | $ 661,400,000 | $ 2,210,900,000 | $ 1,914,400,000 | |
Average assets under management | 636,300,000,000 | 557,800,000,000 | 620,900,000,000 | 542,200,000,000 | |
Period end assets under management | 647,200,000,000 | 647,200,000,000 | 576,800,000,000 | ||
Sponsored mutual funds in the U.S. [Member]
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Investment advisory services | |||||
Revenues from advisory services | 541,300,000 | 458,100,000 | 1,551,300,000 | 1,318,300,000 | |
Average assets under management | 396,200,000,000 | 332,500,000,000 | 381,300,000,000 | 321,100,000,000 | |
Period end assets under management | 403,800,000,000 | 403,800,000,000 | 346,900,000,000 | ||
Sponsored mutual funds in the U.S. [Member] | Stock and blended asset [Member]
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Investment advisory services | |||||
Revenues from advisory services | 452,000,000 | 368,100,000 | 1,276,300,000 | 1,059,600,000 | |
Average assets under management | 305,400,000,000 | 246,400,000,000 | 289,500,000,000 | 237,800,000,000 | |
Period end assets under management | 312,400,000,000 | 312,400,000,000 | 256,900,000,000 | ||
Sponsored mutual funds in the U.S. [Member] | Bond and money market [Member]
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Investment advisory services | |||||
Revenues from advisory services | 89,300,000 | 90,000,000 | 275,000,000 | 258,700,000 | |
Average assets under management | 90,800,000,000 | 86,100,000,000 | 91,800,000,000 | 83,300,000,000 | |
Period end assets under management | 91,400,000,000 | 91,400,000,000 | 90,000,000,000 | ||
Other portfolios [Member]
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Investment advisory services | |||||
Revenues from advisory services | 227,000,000 | 203,300,000 | 659,600,000 | 596,100,000 | |
Average assets under management | 240,100,000,000 | 225,300,000,000 | 239,600,000,000 | 221,100,000,000 | |
Period end assets under management | 243,400,000,000 | 243,400,000,000 | 229,900,000,000 | ||
Other portfolios [Member] | Stock and blended asset [Member]
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Investment advisory services | |||||
Revenues from advisory services | 187,400,000 | 160,200,000 | 538,100,000 | 472,100,000 | |
Average assets under management | 182,500,000,000 | 159,200,000,000 | 177,300,000,000 | 156,900,000,000 | |
Period end assets under management | 181,400,000,000 | 181,400,000,000 | 164,200,000,000 | ||
Other portfolios [Member] | Bond, money market, and stable value [Member]
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Investment advisory services | |||||
Revenues from advisory services | 39,600,000 | 43,100,000 | 121,500,000 | 124,000,000 | |
Average assets under management | 57,600,000,000 | 66,100,000,000 | 62,300,000,000 | 64,200,000,000 | |
Period end assets under management | $ 62,000,000,000 | $ 62,000,000,000 | $ 65,700,000,000 |