Supplemental Cash Flow Information

12 Months Ended

Dec. 31, 2011

Supplemental Cash Flow Information

Supplemental Cash Flow Information

4.    Supplemental Cash Flow Information

       Non-cash investment exchanges, including modifications of certain mortgage loans (primarily refinances at maturity with no concessions granted to the borrower), fixed income securities, limited partnerships and other investments, as well as mergers completed with equity securities, totaled $601 million, $664 million and $485 million for the years ended December 31, 2011, 2010 and 2009, respectively.

       Liabilities for collateral received in conjunction with the Company's securities lending program were $419 million, $461 million and $449 million as of December 31, 2011, 2010 and 2009, respectively, and are reported in other liabilities and accrued expenses. Obligations to return cash collateral for over-the-counter ("OTC") derivatives were $43 million, $23 million and $209 million as of December 31, 2011, 2010 and 2009, respectively, and are reported in other liabilities and accrued expenses or other investments. The accompanying cash flows are included in cash flows from operating activities in the Consolidated Statements of Cash Flows along with the activities resulting from management of the proceeds, which for the years ended December 31 are as follows:

($ in millions)	2011			2010			2009
Net change in proceeds managed
Net change in short-term investments	$	21		$	171		$	(316	)
Operating cash flow provided (used)		21			171			(316	)
Net change in cash		1			3			(2	)
Net change in proceeds managed	$	22		$	174		$	(318	)
Net change in liabilities
Liabilities for collateral, beginning of year	$	(484	)	$	(658	)	$	(340	)
Liabilities for collateral, end of year		(462	)		(484	)		(658	)
Operating cash flow (used) provided	$	(22	)	$	(174	)	$	318