Short and Long-Term Funding (Long-term Funding Narrative) (Details) - USD ($) $ in Millions |
1 Months Ended | ||
---|---|---|---|
Nov. 30, 2014 |
Jun. 30, 2017 |
Dec. 31, 2016 |
|
Subordinated Borrowing [Line Items] | |||
Carrying Value of Securities Purchased under Agreements to Resell and Deposits Paid for Securities Borrowed | $ 381 | ||
Federal Home Loan Bank, Advances, Weighted Average Interest Rate | 0.98% | 0.50% | |
Two Thousand Fourteen Senior Notes | |||
Subordinated Borrowing [Line Items] | |||
New Senior Debt Issued | $ 250 | ||
Debt Instrument, Interest Rate, Stated Percentage | 2.75% | ||
Two Thousand Fourteen Subordinated Notes | |||
Subordinated Borrowing [Line Items] | |||
Junior Subordinated Debentures Issued | $ 250 | ||
Debt Instrument, Term | 10 years | ||
Subordinated Borrowing, Interest Rate | 4.25% |