at december 31 , 2015 and 2014 , options for 5 million and 6 million shares of common stock were exercisable at a weighted-average price of $ 55.42 and $ 56.21 , respectively .
the total intrinsic value of options exercised was approximately $ .1 billion during 2016 , 2015 and 2014 .
cash received from option exercises under all incentive plans for 2016 , 2015 and 2014 was approximately $ .1 billion , $ .1 billion and $ .2 billion , respectively .
the tax benefit realized from option exercises under all incentive plans was insignificant for 2016 , 2015 and 2014 .
shares of common stock available during the next year for the granting of options and other awards under the incentive plans were approximately 39 million shares at december 31 , 2016 .
total shares of pnc common stock authorized for future issuance under all equity compensation plans totaled approximately 40 million shares at december 31 , 2016 .
during 2016 , we issued approximately 2 million common shares from treasury stock in connection with stock option exercise activity .
as with past exercise activity , we currently intend to utilize primarily treasury stock for any future stock option exercises .
incentive/performance unit awards and restricted share/restricted share unit awards the fair value of nonvested incentive/performance unit awards and restricted share/restricted share unit awards is initially determined based on prices not less than the market value of our common stock on the date of grant with a reduction for estimated forfeitures .
the value of certain incentive/ performance unit awards is subsequently remeasured based on the achievement of one or more financial and other performance goals .
additionally , certain incentive/ performance unit awards require subsequent adjustment to their current market value due to certain discretionary risk review triggers .
the weighted-average grant date fair value of incentive/ performance unit awards and restricted share/restricted share unit awards granted in 2016 , 2015 and 2014 was $ 78.37 , $ 91.57 and $ 80.79 per share , respectively .
the total intrinsic value of incentive/performance unit and restricted share/ restricted share unit awards vested during 2016 , 2015 and 2014 was approximately $ .1 billion , $ .2 billion and $ .1 billion , respectively .
we recognize compensation expense for such awards ratably over the corresponding vesting and/or performance periods for each type of program .
table 78 : nonvested incentive/performance unit awards and restricted share/restricted share unit awards 2013 rollforward ( a ) shares in millions nonvested incentive/ performance units shares weighted- average date fair nonvested restricted share/ restricted weighted- average grant date fair value .

Shares in millions
Nonvested Incentive/ Performance Units Shares
Weighted- Average Grant Date Fair Value
Nonvested Restricted Share/ Restricted Share Units
Weighted- Average Grant Date Fair Value
December 31, 2015
2
$79.27
3
$79.26
Granted (b)
1
$77.77
1
$78.71
Vested/Released (b)
(1)
$71.59
(1)
$65.53
December 31, 2016
2
$81.42
3
$83.27

( a ) forfeited awards during 2016 were insignificant .
( b ) includes adjustments for achieving specific performance goals for incentive/ performance unit share awards granted in prior periods .
in table 78 , the units and related weighted-average grant date fair value of the incentive/performance unit share awards exclude the effect of dividends on the underlying shares , as those dividends will be paid in cash if and when the underlying shares are issued to the participants .
blackrock long-term incentive plans ( ltip ) blackrock adopted the 2002 ltip program to help attract and retain qualified professionals .
at that time , we agreed to transfer up to four million shares of blackrock common stock to fund a portion of the 2002 ltip program and future ltip programs approved by blackrock 2019s board of directors .
in 2009 , our obligation to deliver any remaining blackrock common shares was replaced with an obligation to deliver shares of blackrock 2019s series c preferred stock held by us .
in 2016 , we transferred .5 million shares of blackrock series c preferred stock to blackrock in connection with our obligation .
at december 31 , 2016 , we held approximately .8 million shares of blackrock series c preferred stock which were available to fund our obligations .
see note 23 subsequent events for information on our february 1 , 2017 transfer of .5 million shares of the series c preferred stock to blackrock to satisfy a portion of our ltip obligation .
we account for our blackrock series c preferred stock at fair value , which offsets the impact of marking-to-market the obligation to deliver these shares to blackrock .
see note 6 fair value for additional information regarding the valuation of the blackrock series c preferred stock .
the pnc financial services group , inc .
2013 form 10-k 139 .

Question: Analyse this data from a financial earnings document. what was the total intrinsic value of incentive/performance unit and restricted share/ restricted share unit awards vested during 2016 , 2015 and 2014 in billions?
Choices:
1.3
0
2.2
0.4
2.3
Correct choice index: 3