Borrowed Funds (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total borrowed funds	$ 57,419	$ 59,088
PNC Capital Trust C
Debt Instrument [Line Items]
Carrrying value - junior subordinated debt	205
Trust preferred securities	200
Parent Company
Debt Instrument [Line Items]
Total borrowed funds	6,715	6,848
Bank
Debt Instrument [Line Items]
Total borrowed funds	45,699	47,451
Senior Notes \| Parent Company
Debt Instrument [Line Items]
Total borrowed funds	5,063	5,203
Basis adjustments - Fair value accounting hedges	(29)
Senior Notes \| Bank
Debt Instrument [Line Items]
Total borrowed funds	19,955	22,859
Basis adjustments - Fair value accounting hedges	(246)
Subordinated Debt \| Parent Company
Debt Instrument [Line Items]
Total borrowed funds	1,447	1,440
Basis adjustments - Fair value accounting hedges	8
Subordinated Debt \| Bank
Debt Instrument [Line Items]
Total borrowed funds	4,243	$ 3,555
Basis adjustments - Fair value accounting hedges	$ 7
3-month LIBOR \| PNC Capital Trust C
Debt Instrument [Line Items]
Basis Spread on LIBOR Rate - trust preferred securities	0.57%

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In order to issue trust preferred securities, a sponsor forms a trust by investing a nominal amount of cash to purchase all of the voting common stock of the trust. The trust issues nonvoting, mandatorily redeemable preferred securities to outside investors in exchange for cash. The proceeds received from the issuance of the preferred securities, together with the cash received for issuing the common stock to the sponsor, is then loaned to the sponsor in exchange for a note which has the same terms as the trust preferred securities. Trust preferred securities possesses characteristics of both equity and debt issues and are generally issued by bank holding companies.

+ References

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- Definition

Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Junior Subordinated Notes, which have a lower priority than senior instruments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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