v2.4.0.6
Employee Benefit Plans (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan contribution by employer
$ 41
$ 28
Duke Energy Carolinas [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan contribution by employer
14
11
Progress Energy [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan contribution by employer
12
12
Duke Energy Progress [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan contribution by employer
6
6
Duke Energy Florida [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan contribution by employer
4
4
Duke Energy Ohio [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan contribution by employer
1
1
Duke Energy Indiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan contribution by employer
$ 2
$ 2
X
- Definition
Defined contribution plan contribution by employer
+ References
No definition available.
+ Details
Name:
duk_DefinedContributionPlanContributionByEmployer
Namespace Prefix:
duk_
Data Type:
xbrli:monetaryItemType
Balance Type:
debit
Period Type:
duration
X
- Details
Name:
us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix:
us-gaap_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration