|
Commitments and Contingencies (Capital Lease Obligations) (Details) (USD $)
In Millions, unless otherwise specified
|
12 Months Ended |
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
| Capital Leased Assets [Line Items] |
|
|
|
|
|
| Debt and capital lease obligations |
$ 8,052 |
|
$ 7,173 |
|
|
| Depreciation of rental equipment |
921 |
|
852 |
|
699 |
| Non-rental depreciation and amortization |
273 |
|
246 |
|
198 |
| Less accumulated depreciation and amortization |
(15) |
|
(13) |
|
|
| Property and equipment, net |
18 |
|
23 |
|
|
| Rental Equipment |
|
|
|
|
|
| Capital Leased Assets [Line Items] |
|
|
|
|
|
| Depreciation of rental equipment |
20 |
|
22 |
|
15 |
| Property and equipment |
177 |
|
171 |
|
|
| Less accumulated depreciation and amortization |
(45) |
|
(38) |
|
|
| Property and equipment, net |
132 |
|
133 |
|
|
| Non Rental Equipment |
|
|
|
|
|
| Capital Leased Assets [Line Items] |
|
|
|
|
|
| Non-rental depreciation and amortization |
4 |
|
5 |
|
4 |
| Non-rental vehicles |
|
|
|
|
|
| Capital Leased Assets [Line Items] |
|
|
|
|
|
| Property and equipment |
13 |
|
18 |
|
|
| Buildings |
|
|
|
|
|
| Capital Leased Assets [Line Items] |
|
|
|
|
|
| Property and equipment |
20 |
|
18 |
|
|
| Subsidiaries |
|
|
|
|
|
| Capital Leased Assets [Line Items] |
|
|
|
|
|
| Debt and capital lease obligations |
8,020 |
|
7,037 |
|
|
| Capital leases | Subsidiaries |
|
|
|
|
|
| Capital Leased Assets [Line Items] |
|
|
|
|
|
| Debt and capital lease obligations |
$ 105 |
[1] |
$ 120 |
[1] |
|
|
|
|