loss on the contract may be recorded , if necessary , and any remaining deferred implementation revenues would typically be recognized over the remaining service period through the termination date .
in connection with our long-term outsourcing service agreements , highly customized implementation efforts are often necessary to set up clients and their human resource or benefit programs on our systems and operating processes .
for outsourcing services sold separately or accounted for as a separate unit of accounting , specific , incremental and direct costs of implementation incurred prior to the services commencing are generally deferred and amortized over the period that the related ongoing services revenue is recognized .
deferred costs are assessed for recoverability on a periodic basis to the extent the deferred cost exceeds related deferred revenue .
pensions we sponsor defined benefit pension plans throughout the world .
our most significant plans are located in the u.s. , the u.k. , the netherlands and canada .
our significant u.s. , u.k. , netherlands and canadian pension plans are closed to new entrants .
we have ceased crediting future benefits relating to salary and service for our u.s. , u.k. , netherlands and canadian plans to the extent statutorily permitted .
in 2016 , we estimate pension and post-retirement net periodic benefit cost for major plans to increase by $ 15 million to a benefit of approximately $ 54 million .
the increase in the benefit is primarily due to a change in our approach to measuring service and interest cost .
effective december 31 , 2015 and for 2016 expense , we have elected to utilize a full yield curve approach in the estimation of the service and interest cost components of net periodic pension and post-retirement benefit cost for our major pension and other post-retirement benefit plans by applying the specific spot rates along the yield curve used in the determination of the benefit obligation to the relevant projected cash flows .
in 2015 and prior years , we estimated these components of net periodic pension and post-retirement benefit cost by applying a single weighted-average discount rate , derived from the yield curve used to measure the benefit obligation at the beginning of the period .
we have made this change to improve the correlation between projected benefit cash flows and the corresponding yield curve spot rates and to provide a more precise measurement of service and interest costs .
this change does not affect the measurement of the projected benefit obligation as the change in the service cost and interest cost is completely offset in the actuarial ( gain ) loss recorded in other comprehensive income .
we accounted for this change as a change in estimate and , accordingly , will account for it prospectively .
recognition of gains and losses and prior service certain changes in the value of the obligation and in the value of plan assets , which may occur due to various factors such as changes in the discount rate and actuarial assumptions , actual demographic experience and/or plan asset performance are not immediately recognized in net income .
such changes are recognized in other comprehensive income and are amortized into net income as part of the net periodic benefit cost .
unrecognized gains and losses that have been deferred in other comprehensive income , as previously described , are amortized into compensation and benefits expense as a component of periodic pension expense based on the average life expectancy of the u.s. , the netherlands , canada , and u.k .
plan members .
we amortize any prior service expense or credits that arise as a result of plan changes over a period consistent with the amortization of gains and losses .
as of december 31 , 2015 , our pension plans have deferred losses that have not yet been recognized through income in the consolidated financial statements .
we amortize unrecognized actuarial losses outside of a corridor , which is defined as 10% ( 10 % ) of the greater of market-related value of plan assets or projected benefit obligation .
to the extent not offset by future gains , incremental amortization as calculated above will continue to affect future pension expense similarly until fully amortized .
the following table discloses our unrecognized actuarial gains and losses , the number of years over which we are amortizing the experience loss , and the estimated 2016 amortization of loss by country ( amounts in millions ) : .

U.K.
U.S.
Other
Unrecognized actuarial gains and losses
$1,511
$1,732
$382
Amortization period (in years)
10 - 32
7 - 28
15 - 41
Estimated 2016 amortization of loss
$37
$52
$10

the unrecognized prior service cost ( income ) at december 31 , 2015 was $ 9 million , $ 46 million , and $ ( 7 ) million in the u.s. , u.k .
and other plans , respectively .
for the u.s .
pension plans we use a market-related valuation of assets approach to determine the expected return on assets , which is a component of net periodic benefit cost recognized in the consolidated statements of income .
this approach .

Question: Analyse this data from a financial earnings document. in 2015 what was the ratio of the unrecognized prior service cost to the income
Choices:
0.83636
-0.12727
0.14
0.12727
0.07143
Correct choice index: 3