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

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

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The cash outflow for the extinguishment of long-term borrowing, with the highest claim on the assets of the entity in case of bankruptcy or liquidation, before its maturity.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

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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.

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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.

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The cash outflow for the settlement of long-term borrowing, with the highest claim on the assets of the entity in case of bankruptcy or liquidation, as it matures.

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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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The cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period.

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LONG-TERM DEBT - CREDIT FACILITY (Details) - USD ($) $ in Millions	1 Months Ended						12 Months Ended
	Nov. 30, 2016	Jun. 30, 2016	May 31, 2016	Apr. 30, 2016	Feb. 29, 2016	Jun. 30, 2015	Dec. 31, 2016	Dec. 31, 2015
Long-term debt
Net proceeds from issuance of long-term debt							$ 4,203.0	$ 1,478.0
Credit Facility
Long-term debt
Credit Facility, maximum borrowing capacity							$ 2,000.0
Average annual facility fee as percent of the total commitment amounts							0.08%
Letter of Credit
Long-term debt
Credit Facility, maximum borrowing capacity							$ 1,000.0
Senior notes
Long-term debt
Debt instrument issued	$ 1,500.0			$ 2,750.0		$ 1,500.0
Net proceeds from issuance of long-term debt	1,490.0			2,720.0		$ 1,480.0
3.00% senior notes due 2027
Long-term debt
Debt instrument issued	$ 750.0
Debt instrument interest rate stated percentage	3.00%						3.00%
4.10% senior notes due 2047
Long-term debt
Debt instrument issued	$ 750.0
Debt instrument interest rate stated percentage	4.10%						4.10%
1.75% senior notes due 2017
Long-term debt
Debt instrument interest rate stated percentage			1.75%					1.75%
Early repayment of debt through exercise of redemption option			$ 1,250.0
4.125% senior notes due 2016
Long-term debt
Debt instrument interest rate stated percentage		4.125%						4.125%
Retired debt		$ 750.0
2.60% senior notes due 2022
Long-term debt
Debt instrument issued				$ 400.0
Debt instrument interest rate stated percentage				2.60%			2.60%
3.40% senior notes due 2026
Long-term debt
Debt instrument issued				$ 1,150.0
Debt instrument interest rate stated percentage				3.40%			3.40%
4.40% senior notes due 2046
Long-term debt
Debt instrument issued				$ 1,200.0
Debt instrument interest rate stated percentage				4.40%			4.40%
2.50% senior notes due 2016
Long-term debt
Debt instrument interest rate stated percentage					2.50%			2.50%
Repaid of matured senior notes					$ 700.0
Dolphin Energy
Long-term debt
Notional amount of limited recourse guarantees with respect to Dolphin Energy's debt							$ 296.0	$ 318.0