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Accumulated Other Comprehensive Income
 9 Months Ended
Sep. 30, 2020
Equity [Abstract]  
Accumulated Other Comprehensive Income Accumulated Other Comprehensive Income
The components of other comprehensive income (loss) are as follows:
20202019
Three Months Ended September 30,Before
Tax		Tax
Effect		Net of
Tax		Before
Tax		Tax
Effect		Net of
Tax
Change in net unrealized gain (loss) on available for sale securities:
Net unrealized gain (loss)$97 $(20)$77 $51 $(12)$39 
Other reclassifications included in other revenue(3)1 (2)(1)— (1)
Amortization of amounts previously recorded upon transfer to held to
maturity from available for sale		— — — 10 (3)7 
Other comprehensive income (loss)$94 $(19)$75 $60 $(15)$45 

20202019
Nine Months Ended September 30,Before
Tax		Tax
Effect		Net of
Tax		Before
Tax		Tax
Effect		Net of
Tax
Change in net unrealized gain (loss) on available for sale securities:
Net unrealized gain (loss)$7,361 $(1,762)$5,599 $496 $(119)$377 
Other reclassifications included in other revenue(3)1 (2)(5)1 (4)
Amortization of amounts previously recorded upon transfer to held to
maturity from available for sale		— — — 30 (7)23 
Other1 — 1 — — — 
Other comprehensive income (loss)$7,359 $(1,761)$5,598 $521 $(125)$396 

AOCI balances are as follows:
Total AOCI
Balance at June 30, 2019$99 
Available for sale securities:
Net unrealized gain (loss), excluding transfers to available for sale from held to maturity39 
Other reclassifications included in other revenue(1)
Held to maturity securities:
Amortization of amounts previously recorded upon transfer to held to maturity from available for sale7 
Balance at September 30, 2019$144 
Balance at June 30, 2020$5,611 
Available for sale securities:
Net unrealized gain (loss), excluding transfers to available for sale from held to maturity77 
Other reclassifications included in other revenue(2)
Balance at September 30, 2020$5,686 
Total AOCI
Balance at December 31, 2018$(252)
Available for sale securities:
Net unrealized gain (loss), excluding transfers to available for sale from held to maturity358 
Net unrealized gain on securities transferred to available for sale from held to maturity (1)
19 
Other reclassifications included in other revenue(4)
Held to maturity securities:
Amortization of amounts previously recorded upon transfer to held to maturity from available for sale23 
Balance at September 30, 2019$144 
Balance at December 31, 2019$88 
Available for sale securities:
Net unrealized gain (loss), excluding transfers to available for sale from held to maturity4,542 
Net unrealized gain on securities transferred to available for sale from held to maturity (2)
1,057 
Other reclassifications included in other revenue(2)
Other1 
Balance at September 30, 2020$5,686 
(1) In the first quarter of 2019, the Company made an election to transfer a portion of its HTM securities to AFS as part of its adoption of ASU 2017-12, “Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities”. The transfer resulted in a net of tax increase to AOCI of $19 million.
(2) On January 1, 2020, the Company transferred all of its investment securities designated as HTM to the AFS category. The transfer resulted in a net of tax increase to AOCI of $1.1 billion. See Note 5 for additional discussion on the 2020 transfer of HTM securities to AFS.