Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Details) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2015
USD ($)
|
Dec. 31, 2014
USD ($)
|
Dec. 31, 2013
USD ($)
|
|
| Accounting Policies [Abstract] | |||
| Net sales | $ 20,855 | $ 22,552 | $ 22,046 |
| Number of Eaton employees | 97,000 | ||
| Countries of operation | over 60 | ||
| Countries where products are sold | 175 | ||
| Minimum [Member] | |||
| Investments in associate companies [Line Items] | |||
| Equity method of accounting, ownership interest | 20.00% | ||
| Maximum [Member] | |||
| Investments in associate companies [Line Items] | |||
| Equity method of accounting, ownership interest | 50.00% | ||