I contacted the Financial Institution and they stated that upon notification of a death, all electronic access to the decedents information is cut off for security reasons. They mailed the tax information to us and we now have a 38 page paper document with brokerage transactions data that needs to be input.
No -- You can't scan the composite 1099 into TurboTax.
However, what you can do is enter a summary of each category of transaction (short-term with basis reported to IRS, short-term basis not reported, etc.) You can then mail in the detailed statement to the IRS along with Form 8453 as a transmittal document. TurboTax will walk you through the process.
Please see this TurboTax Help article for instructions: How do I enter a large number of stock transactions in TurboTax Online?
[The steps are similar in the CD/Download version of TurboTax.]
Use the summary option for each category that shows on your consolidated 1099-B.
Then note that TurboTax may ask you to upload the 1099-B PDF into TurboTax, like tax software from other companies will ask you.
This forum is still trying to determine if that avoids the mailing requirement, since TurboTax "experts" keep giving contradictory information (see above reply), as does TurboTax itself.
If you don't get that question and you insist on using TurboTax, you'll have to mail that 38 page document to a special IRS office in Austin TX.