Mr. Donilon is also entitled to future pension payments from Fannie Mae, where he worked from 1999 to 2005.
Such valuations are sensitive to the choice of discount rate used to convert future pension payments into today's money.
With a present value of more than £1 trillion, future pension payments to government employees alone will be greater than outstanding government-bond debt.
Tomás Burgos, a spokesman for the main opposition group, the Popular Party, said there was consensus on changing the calculation method for future pension payments, without offering specific details.
And workers would no longer be allowed to use overtime in their last year of service to bolster their future pension payments.
Instead of trying to get back the money, he said, Detroit might try to reduce those people's future pension payments, to get back at least part of the overpayments.
The belief that the fortunes of Asia's biggest carrier might be at a turning point grew the following day when the airline announced that 68% of its employees had voted for a plan to cut future pension payments by half.
Those included things like sick pay for state workers, as well as the state's liability for future pension payments, which was converted to debt in 1997 in a controversial $2.8 billion bond issue that treasury officials insist will save billions in the long run.
Future pension payments are unfunded in countries where demography decreases.
These new loans, she writes, were piled on top of "existing government burdens, sometimes acknowledged, more often off the books either as a deliberate sleight of hand or because they are implicit in the promise of future pension and welfare payments".
