Commercial Paper, Maximum Borrowing Capacity

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- Definition

Equity Unit, stated value per unit.

+ References

No definition available.

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- Definition

Equity Units, Contract Annual Rate

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No definition available.

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- Definition

Equity Units Issued.

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- Definition

Equity Units, ownership interest percentage In remarketable subordinated notes

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No definition available.

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- Definition

Present value of stock purchase contract liability related to Equity Units. This amount represents the offset to additional paid-in-capital.

+ References

No definition available.

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- Definition

Short-Term financing which is expected to be paid back relatively quickly, such as by a subsequent longer-term loan. Also called swing loan or bridge financing.

+ References

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- Definition

Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

+ 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(a)(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
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-Section S99
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-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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-Publisher SEC
-Name Regulation S-X (SX)
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-Section 03
-Paragraph 16
-Article 7

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- Definition

Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

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-SubTopic 10
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-Subparagraph (SX 210.5-02.22)
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-Name Regulation S-X (SX)
-Number 210
-Section 03
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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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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.

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- Definition

Face (par) amount of the original debt instrument that was repurchased.

+ References

No definition available.

+ Details

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- Definition

Amount of advances from Federal Home Loan Bank (FHLBank) maturing in the next rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

No definition available.

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- Definition

Describe the settlement alternatives of the freestanding contract as either (i) physical settlement; (ii) net-share settlement; or, (iii) net-cash settlement. Physical settlement is when the party designated in the contract as the buyer delivers the full stated amount of cash to the seller, and the seller delivers the full stated number of shares to the buyer. Net-share settlement is when the party with a loss delivers to a party with a gain shares with a current fair value equal to the gain. Net-cash settlement is when the party with a loss delivers to the party with a gain a cash payment equal to the gain, and no shares are exchanged. Discuss also who controls the settlement alternatives and the maximum number of shares that could be required to be issued to net share settle a contract. If a contract does not have a fixed or determinable maximum number of shares that may be required to be issued, the fact that a potentially infinite number of shares could be required to be issued to settle the contract would generally be expected to be disclosed.

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-Name Accounting Standards Codification
-Topic 815
-SubTopic 40
-Section 50
-Paragraph 5
-Subparagraph (b)
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- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
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-Paragraph 2
-Subparagraph (SX 210.5-03.8)
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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

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- Definition

Expenses paid for obtaining loans which includes expenses such as application and origination fees.

+ References

No definition available.

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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-SubTopic 210
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-Name Regulation S-X (SX)
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-Section 02
-Paragraph 20, 22
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- Definition

The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

+ References

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Debt (Narrative) (Details) - USD ($) shares in Millions	3 Months Ended		12 Months Ended
Debt (Narrative) (Details) - USD ($) shares in Millions	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2015	Feb. 15, 2017	Dec. 31, 2016	May 12, 2015
Debt Instrument [Line Items]
Senior revolving credit facility, maximum borrowing capacity	$ 3,500,000,000
Equity Unit Purchase Agreements [Member]
Debt Instrument [Line Items]
Equity Units Issued						25.0
Outstanding principal amount	1,250,000,000
Equity Units, stated value per unit (whole dollars)	$ 50
Equity Units, ownership interest percentage in remarketable subordinated notes	5.00%
Par value, remarketable subordinated notes	$ 1,000
Interest rate, remarketable subordinated notes	1.90%
Forward Contract Indexed to Issuer's Equity, Settlement Alternatives	On May 1, 2018, if the applicable market value of our common stock is equal to or greater than $207.6174 per share, the settlement rate will be 0.2406 shares of our common stock. If the applicable market value of our common stock is less than $207.6174 per share but greater than $143.7351 per share, the settlement rate will be a number of shares of our common stock equal to $50 (whole dollars) divided by the applicable market value of our common stock. If the applicable market value of common stock is less than or equal to $143.7351, the settlement rate will be 0.3480 shares of our common stock. Holders of the Equity Units may elect early settlement at a minimum settlement rate of 0.2406 shares of our common stock for each purchase contract being settled.
Stock purchase contract liability, present value	$ 51,800,000
Equity Units, contract adjustment payment rate	3.35%
Convertible Debt [Member]
Debt Instrument [Line Items]
Outstanding principal amount	$ 512,600,000
Bridge Loan [Member]
Debt Instrument [Line Items]
Bridge facility fees	97,500,000		$ 106,600,000
Bridge Loan	19,500,000,000				$ 22,500,000,000
Amoritization of bridge facility fees	75,600,000	$ 31,600,000
Federal Home Loan Bank Advances [Member]
Debt Instrument [Line Items]
Federal Home Loan Bank, advances, short-term	$ 540,000,000
Debt instrument interest rate	0.82%
Surplus Notes [Member] \| Nine Point Zero Zero Zero Percent Due Two Thousand Twenty Seven [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 24,900,000
Remarketable Subordinated Notes [Member] \| One Point Nine Zero Zero Percent Due Two Thousand Twenty Eight [Member]
Debt Instrument [Line Items]
Long-term Debt	1,237,800,000
Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Long-term Debt	12,657,500,000
Senior Unsecured Notes [Member] \| One Point Two Five Zero Percent Due Two Thousand Fifteen [Member]
Debt Instrument [Line Items]
Debt instruments, repurchased face amount				$ 400,000,000
Interest rate, remarketable subordinated notes				2.375%
Commercial Paper Program
Debt Instrument [Line Items]
Commercial paper authorized	2,500,000,000
Commercial paper	$ 2,348,100,000