v3.8.0.1

Debt (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2017
Debt Disclosure [Abstract] |
Schedule Of Debt | Debt consists of the following ($ in millions):
| December 31, 2017 |  | December 31, 2016
$1,400 million 5.625% Senior notes, due February 15, 2021 | $ | 1,400 |  |  | $ | 1,400 |
$1,000 million 4.75% Senior notes, due May 15, 2022 | 1,006 |  |  | 1,008 |
$1,000 million 6.125% Senior notes, due February 15, 2024 | 1,000 |  |  | 1,000 |
$1,200 million 4.75% Senior notes, due January 15, 2025 | 1,200 |  |  | 1,200 |
Fair value of interest rate swap agreements | (71 | ) |  | (58 | )
Total senior notes | 4,535 |  |  | 4,550 |
Revolving credit agreement | 150 |  |  | 100 |
Mortgage notes payable | 61 |  |  | 64 |
Capital leases and other | 18 |  |  | 18 |
Debt issuance costs | (65 | ) |  | (77 | )
Total debt | 4,699 |  |  | 4,655 |
Less current portion | (4 | ) |  | (4 | )
Long-term debt | $ | 4,695 |  |  | $ | 4,651 |
Interest Rate Swaps Summary of Notional Amounts and Estimated Fair Values | The following is a summary of the notional amounts and estimated fair values of the Company's interest rate swap agreements as of December 31, 2017 and 2016 ($ in millions):
Expiration Date |  | Notional Amount
February 15, 2021 |  | $ | 600 |
May 15, 2022 |  | 500 |
February 15, 2024 |  | 1,000 |
January 15, 2025 |  | 600 |
Total |  | $ | 2,700 |
Schedule Of Aggregate Maturities Of Debt | Aggregate maturities for the Company's debt are as follows ($ in millions):
2018 |  | $ | 4 |
2019 |  | 16 |
2020 |  | 4 |
2021 |  | 1,451 |
2022 |  | 1,151 |
Thereafter |  | 2,203 |
Total |  | $ | 4,829 |

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

X
- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
Name: | us-gaap_ScheduleOfDebtTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of interest rate derivatives, including, but not limited to, the fair value of the derivatives, statement of financial position location, and statement of financial performance location of these instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 + Details
Name: | us-gaap_ScheduleOfInterestRateDerivativesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
Name: | us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration