Comerica 2011 Annual Report Download - page 109

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries
F-72
The following table summarizes the changes in Level 3 assets and liabilities measured at fair value on a recurring basis
for the years ended December 31, 2011 and 2010.
(in millions)
Year Ended December 31, 2011
Trading securities:
State and municipal securities
Other securities
Total trading securities
Investment securities available-for-
sale:
State and municipal securities (a)
Auction-rate debt securities
Other corporate debt securities
Auction-rate preferred securities
Total investment securities
available-for-sale
Derivative assets:
Warrants
Derivative liabilities:
Other
Year Ended December 31, 2010
Trading securities:
State and municipal securities
Other securities
Total trading securities
Investment securities available-for-
sale:
State and municipal securities (a)
Auction-rate debt securities
Other corporate debt securities
Auction-rate preferred securities
Total investment securities
available-for-sale
Derivative assets:
Warrants
Derivative liabilities:
Other
Balance at
Beginning
of Period
$ —
1
1
39
1
1
570
611
7
1
$ —
46
150
7
706
909
7
Net Realized/Unrealized Gains (Losses)
Recorded in Earnings
Realized
$ —
10
10
10
(2)
$ —
(1)
3
27
6
35
2
(4)
Unrealized
$ —
(5)
$ —
1
1
1
(1)
Recorded in
Other
Comprehensive
Income
(Pre-tax)
$ —
2
12
14
$ —
(2)
5
(21)
(18)
Purchases
$ 3
3
$ 3
3
1
Sales
$ (3)
(1)
(4)
(17)
(184)
(201)
(14)
$ (3)
(3)
(4)
(157)
(121)
(282)
(4)
Settlements
$ —
(1)
(1)
(2)
$ —
(33)
(33)
(4)
Balance at
End of Period
$ —
24
1
408
433
3
6
$ —
1
1
39
1
1
570
611
7
1
(a) Primarily auction-rate securities