XML 42 R29.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Financial Instruments (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2018
Financial Instruments |
Carrying amounts and fair values of the financial instruments |
|  | September 30, 2018 |  | December 31, 2017 |
|  | Carrying |  | Fair |  | Carrying |  | Fair |
|  | amount |  | value |  | amount |  | value |
Cash and cash equivalents |  | $ | 2,307 |  | $ | 2,307 |  | $ | 2,519 |  | $ | 2,519 |
Short-term investments |  |  | — |  |  | — |  |  | 450 |  |  | 450 |
Restricted cash and cash equivalents |  |  | 568 |  |  | 568 |  |  | 456 |  |  | 456 |
Restricted investments |  |  | 7 |  |  | 7 |  |  | 33 |  |  | 33 |
Long-term debt, including current maturities |  |  | 9,327 |  |  | 9,949 |  |  | 7,396 |  |  | 7,538 |
Derivative instruments, liabilities |  |  | 2 |  |  | 2 |  |  | — |  |  | — |

X
- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13467-108611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueByBalanceSheetGroupingTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_FairValueDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration