XML 41 R40.htm IDEA: XBRL DOCUMENT
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Debt (Details) - USD ($) | 2 Months Ended | 3 Months Ended | 4 Months Ended | 6 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 08, 2015 | Jun. 30, 2015 | Jun. 30, 2015 | Jun. 30, 2015 | Jun. 30, 2014 | Jul. 31, 2015 | Apr. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Mar. 17, 2011
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gains (Losses) on Extinguishment of Debt |  |  |  | $ (33,500,000) | $ 0 |  |  |  |  |  |
Seven Point Eight Seven Five Percent Senior Notes Member |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, interest rate, stated percentage |  | 7.875% | 7.875% | 7.875% |  |  |  |  | 7.875% |  |
Senior note, maturity year |  |  |  | 2040 |  |  |  |  |  |  |
Five Point Two Percent Senior Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, interest rate, stated percentage |  | 5.20% | 5.20% | 5.20% |  |  |  |  | 5.20% |  |
Four Point Five Percent Senior Notes Member [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, interest rate, stated percentage |  | 4.50% | 4.50% | 4.50% |  |  |  |  | 4.50% |  |
Five Point Seven Five Percent Senior Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, interest rate, stated percentage |  | 5.75% | 5.75% | 5.75% |  |  |  |  | 5.75% |  |
Three Point Two Five Percent Senior Notes Member |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, interest rate, stated percentage |  | 3.25% | 3.25% | 3.25% |  |  |  |  | 3.25% |  |
Four Point Three Three Percent Marine Administration Bonds Including Current Maturities Member |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, interest rate, stated percentage |  | 4.33% | 4.33% | 4.33% |  |  |  |  | 4.33% |  |
Four Point Six Five Percent Marine Administration Bonds Including Current Maturities Member |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, interest rate, stated percentage |  | 4.65% | 4.65% | 4.65% |  |  |  |  | 4.65% |  |
Acquired Debt [Member] | Four Point Three Three Percent Marine Administration Bonds Including Current Maturities Member |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, interest rate, stated percentage |  |  |  |  |  |  | 4.33% |  |  |  |
Senior note, maturity year |  |  |  | 2016 |  |  |  |  |  |  |
Senior Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  |  |  | 100.00% |  |  |  |  |  |  |
Senior Notes [Member] | Five Point Two Percent Senior Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  | $ 700,000,000 |  |  |
Debt instrument, interest rate, stated percentage |  |  |  |  |  |  |  | 5.20% |  |  |
Senior note, maturity year |  |  |  | 2025 |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount (Premium), Net |  |  |  |  |  |  |  | $ 2,600,000 |  |  |
Senior Notes [Member] | Five Point Seven Five Percent Senior Notes Member [Domain] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  | $ 400,000,000 |  | $ 625,000,000 |
Debt instrument, interest rate, stated percentage |  |  |  |  |  |  |  | 5.75% |  | 5.75% |
Senior note, maturity year |  |  |  | 2044 |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount (Premium), Net |  |  |  |  |  |  |  | $ 18,700,000 |  |  |
Senior Notes [Member] | Three Point Two Five Percent Senior Notes Member |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  |  |  | $ 1,000,000,000
Debt instrument, interest rate, stated percentage |  |  |  |  |  |  |  |  |  |  | 3.25%
Senior note, maturity year |  |  |  | 2016 |  |  |  |  |  |  |
Debt Instrument, Repurchased Face Amount |  |  |  |  |  |  | $ 145,400,000 | 854,600,000 |  |  |
Gains (Losses) on Extinguishment of Debt |  | $ (3,800,000) |  | $ (26,600,000) |  |  |  |  |  |  |
Debt Instrument, Repurchase Amount |  |  |  |  |  |  |  | 878,000,000 |  |  |
Gains (Losses) on Extinguishment of Debt, before Write off of Deferred Debt Issuance Cost |  |  |  | 23,400,000 |  |  |  |  |  |  |
Amortization of Debt Discount (Premium) |  |  |  | 1,700,000 |  |  |  |  |  |  |
Write off of Deferred Debt Issuance Cost |  |  |  | $ 1,500,000 |  |  |  |  |  |  |
Bonds [Member] | Four Point Six Five Percent Marine Administration Bonds Including Current Maturities Member |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, interest rate, stated percentage |  |  |  |  |  |  | 4.65% |  |  |  |
Senior note, maturity year |  |  |  | 2020 |  |  |  |  |  |  |
Bonds [Member] | Four Point Three Three Percent and Four Point Six Five Percent Maritime Administration Bonds [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Repurchased Face Amount |  |  |  |  |  |  | $ 51,000,000 |  |  |  |
Gains (Losses) on Extinguishment of Debt |  | 3,100,000 |  |  |  |  |  |  |  |  |
Debt Instrument, Repurchase Amount |  |  |  |  |  |  | $ 65,300,000 |  |  |  |
Scenario, Forecast [Member] | Bonds [Member] | Four Point Three Three Percent and Four Point Six Five Percent Maritime Administration Bonds [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Repurchase Amount |  |  |  |  |  | $ 14,300,000 |  |  |  |  |
Revolving Credit Facility [Member] | Five Year Credit Facility Member |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  | 2,750,000,000 | $ 2,750,000,000 | $ 2,750,000,000 |  |  |  |  |  |  |
Line of Credit Facility, Current Borrowing Capacity |  | 2,250,000,000 | 2,250,000,000 | $ 2,250,000,000 |  |  |  |  |  |  |
Line of Credit Facility, Commitment Fee Percentage |  |  |  | 0.125% |  |  |  |  |  |  |
Line of Credit Facility, Fair Value of Amount Outstanding |  | $ 0 | $ 0 | $ 0 |  |  |  | $ 0 | $ 0 |  |
Revolving Credit Facility [Member] | Base Rate [Member] | Five Year Credit Facility Member |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  | 0.125% |  |  |  |  |  |  |
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Five Year Credit Facility Member |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  | 1.125% |  |  |  |  |  |  |
Revolving Credit Facility [Member] | Maximum [Member] | Five Year Credit Facility Member |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Maximum Percent of Debt to Total Capitalization Ratio | 50.00% |  | 60.00% |  |  |  |  |  |  |  |

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