5. Supplemental Cash Flow Information
Non-cash modifications of certain mortgage loans, fixed income securities, limited partnership interests and other investments, as well as mergers completed with equity securities, totaled $322 million, $323 million and $601 million in 2013, 2012 and 2011, respectively. Non-cash financing activities include $94 million, $39 million and $18 million related to the issuance of Allstate shares for vested restricted stock units in 2013, 2012 and 2011, respectively.
Liabilities for collateral received in conjunction with the Company's securities lending program were $609 million, $784 million and $419 million as of December 31, 2013, 2012 and 2011, respectively, and are reported in other liabilities and accrued expenses. Obligations to return cash collateral for over-the-counter ("OTC") and cleared derivatives were $15 million, $24 million and $43 million as of December 31, 2013, 2012 and 2011, respectively, and are reported in other liabilities and accrued expenses or other investments. The accompanying cash flows are included in cash flows from operating activities in the Consolidated Statements of Cash Flows along with the activities resulting from management of the proceeds, which for the years ended December 31 are as follows:
| ($ in millions) |
2013 | 2012 | 2011 | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
Net change in proceeds managed |
||||||||||
|
Net change in short-term investments |
$ | 190 | $ | (341 | ) | $ | 21 | |||
| | | | | | | | | | | |
|
Operating cash flow provided (used) |
190 | (341 | ) | 21 | ||||||
|
Net change in cash |
(6 | ) | (5 | ) | 1 | |||||
| | | | | | | | | | | |
|
Net change in proceeds managed |
$ |
184 |
$ |
(346 |
) |
$ |
22 |
|||
| | | | | | | | | | | |
| | | | | | | | | | | |
|
Net change in liabilities |
||||||||||
|
Liabilities for collateral, beginning of year |
$ | (808 | ) | $ | (462 | ) | $ | (484 | ) | |
|
Liabilities for collateral, end of year |
(624 | ) | (808 | ) | (462 | ) | ||||
| | | | | | | | | | | |
|
Operating cash flow (used) provided |
$ | (184 | ) | $ | 346 | $ | (22 | ) | ||
| | | | | | | | | | | |
| | | | | | | | | | | |