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Debt (Details) - Revolving Credit Facility [Member] | 9 Months Ended
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Sep. 30, 2016 USD ($)
Credit Facility due 2019 [Member] |
Debt Instrument [Line Items] |
Line of Credit Facility, Current Borrowing Capacity | $ 1,130,000,000
Five Year Credit Facility Member |
Debt Instrument [Line Items] |
Line of Credit Facility, Current Borrowing Capacity | $ 2,250,000,000
Maximum Percent of Debt to Total Capitalization Ratio | 60.00%
Line of Credit Facility, Maximum Borrowing Capacity | $ 500,000,000
Line of Credit Facility, Commitment Fee Percentage | 0.225%
Line of Credit Facility, Fair Value of Amount Outstanding | $ 0
Base Rate [Member] | Five Year Credit Facility Member |
Debt Instrument [Line Items] |
Debt Instrument, Basis Spread on Variable Rate | 0.50%
London Interbank Offered Rate (LIBOR) [Member] | Five Year Credit Facility Member |
Debt Instrument [Line Items] |
Debt Instrument, Basis Spread on Variable Rate | 1.50%

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- Definition Maximum Percent of Debt to Total Capitalization Ratio + References No definition available. + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used. + References No definition available. + Details
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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | credit
Period Type: | instant

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- Definition Fair value of the amount outstanding under the credit facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13476-108611 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Details
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- Details
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- Details
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- Details
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- Details
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