Leases (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
Rentals for capital and operating leases | |||
Operating leases | $ 199 | $ 224 | $ 291 |
FES | |||
Rentals for capital and operating leases | |||
Operating leases | $ 95 | $ 97 | $ 140 |