MEDIUM- AND LONG-TERM DEBT

Medium- and long-term debt is summarized as follows:



(in millions)	June 30, 2012		December 31, 2011
Parent company
Subordinated notes:
4.80% subordinated notes due 2015	$	334	$	338
Floating-rate subordinated notes related to trust preferred securities due 2012	—		30
Total subordinated notes	334		368
Medium-term notes:
3.00% notes due 2015	299		298
Total parent company	633		666
Subsidiaries
Subordinated notes:
7.375% subordinated notes due 2013	52		53
5.70% subordinated notes due 2014	271		276
5.75% subordinated notes due 2016	697		699
5.20% subordinated notes due 2017	596		595
Floating-rate based on LIBOR index subordinated notes due 2018	26		26
8.375% subordinated notes due 2024	188		189
7.875% subordinated notes due 2026	246		243
Total subordinated notes	2,076		2,081
Medium-term notes:
Floating-rate based on LIBOR indices due 2012	—		158
Federal Home Loan Bank advances:
Floating-rate based on LIBOR indices due 2013 to 2014	2,000		2,000
Other notes:
6.0% - 6.4% fixed-rate notes due 2020	33		39
Total subsidiaries	4,109		4,278
Total medium- and long-term debt	$	4,742	$	4,944

The carrying value of medium- and long-term debt has been adjusted to reflect the gain or loss attributable to the risk hedged with interest rate swaps.

Subordinated notes with remaining maturities greater than one year qualify as Tier 2 capital.

On January 7, 2012, the Corporation fully redeemed $4 million of floating-rate subordinated notes, and the related trust preferred securities, with an original maturity date of July 7, 2033. Further, on June 15, 2012, the Corporation fully redeemed the remaining $26 million of floating-rate subordinated notes, and the related trust preferred securities, with an original maturity of June 15, 2037.

Comerica Bank (the Bank), a subsidiary of the Corporation, is a member of the FHLB, which provides short- and long-term funding collateralized by mortgage-related assets to its members. FHLB advances bear interest at variable rates based on LIBOR and were secured by a blanket lien on $14 billion of real estate-related loans at June 30, 2012.