Debt	6 Months Ended
Jun. 30, 2017
Debt Disclosure [Abstract]
Debt	Debt As of June 30, 2017 and December 31, 2016, AB had $482.4 million and $513.0 million, respectively, in commercial paper outstanding with weighted average interest rates of approximately 1.3% and 0.9%, respectively. The commercial paper is short term in nature, and as such, recorded value is estimated to approximate fair value (and considered a Level 2 security in the fair value hierarchy). Average daily borrowings of commercial paper during the first six months of 2017 and the full year 2016 were $557.3 million and $422.9 million, respectively, with weighted average interest rates of approximately 1.0% and 0.6%, respectively. AB has a $200.0 million, unsecured 364-day senior revolving credit facility (the "Revolver") with a leading international bank and the other lending institutions that may be party thereto. The Revolver is available for AB's and SCB LLC's business purposes, including the provision of additional liquidity to meet funding requirements primarily related to SCB LLC's operations. Both AB and SCB LLC can draw directly under the Revolver and management expects to draw on the Revolver from time to time. AB has agreed to guarantee the obligations of SCB LLC under the Revolver. As of June 30, 2017, we had a loan outstanding of $30.0 million with a weighted average interest rate of approximately 2.2%. As of December 31, 2016, we had no amounts outstanding under the Revolver. Average daily borrowing of the Revolver during the first six months of 2017 and full year 2016 were $22.4 million and $7.3 million, respectively, with weighted average interest rates of approximately 1.8% and 1.6%, respectively.

Debt

As of June 30, 2017 and December 31, 2016, AB had $482.4 million and $513.0 million, respectively, in commercial paper outstanding with weighted average interest rates of approximately 1.3% and 0.9%, respectively. The commercial paper is short term in nature, and as such, recorded value is estimated to approximate fair value (and considered a Level 2 security in the fair value hierarchy). Average daily borrowings of commercial paper during the first six months of 2017 and the full year 2016 were $557.3 million and $422.9 million, respectively, with weighted average interest rates of approximately 1.0% and 0.6%, respectively.

AB has a $200.0 million, unsecured 364-day senior revolving credit facility (the "Revolver") with a leading international bank and the other lending institutions that may be party thereto. The Revolver is available for AB's and SCB LLC's business purposes, including the provision of additional liquidity to meet funding requirements primarily related to SCB LLC's operations. Both AB and SCB LLC can draw directly under the Revolver and management expects to draw on the Revolver from time to time. AB has agreed to guarantee the obligations of SCB LLC under the Revolver. As of June 30, 2017, we had a loan outstanding of $30.0 million with a weighted average interest rate of approximately 2.2%. As of December 31, 2016, we had no amounts outstanding under the Revolver. Average daily borrowing of the Revolver during the first six months of 2017 and full year 2016 were $22.4 million and $7.3 million, respectively, with weighted average interest rates of approximately 1.8% and 1.6%, respectively.