NOTE 9. Marketable Securities

The following is a summary of amounts recorded on the Consolidated Balance Sheet for marketable securities (current and non-current).


(Millions)	September 30, 2018		December 31, 2017
Corporate debt securities	$	—	$	14
Commercial paper		304		899
Certificates of deposit/time deposits		31		76
U.S. municipal securities		3		3
Asset-backed securities:
Automobile loan related		—		16
Credit card related		—		68
Asset-backed securities total		—		84
Current marketable securities	$	338	$	1,076

U.S. municipal securities	$	27	$	27
Non-current marketable securities	$	27	$	27

Total marketable securities	$	365	$	1,103

At September 30, 2018 and December 31, 2017, gross unrealized, gross realized, and net realized gains and/or losses (pre-tax) were not material.

The balances at September 30, 2018 for marketable securities by contractual maturity are shown below. Actual maturities may differ from contractual maturities because the issuers of the securities may have the right to prepay obligations without prepayment penalties.


(Millions)	September 30, 2018
Due in one year or less	$	338
Due after one year through five years		13
Due after five years through ten years		14
Total marketable securities	$	365

3M does not currently expect risk related to its holding in asset-backed securities to materially impact its financial condition or liquidity.