Debt	3 Months Ended
Mar. 31, 2016
Debt Disclosure [Abstract]
Debt	DEBT On March 17, 2016, we issued $400 million of 3.5% Notes due April 1, 2021 and $500 million of 4.375% Notes due April 1, 2026. We received proceeds of $896 million, net of discount, for the issuance of these Notes. The Notes are senior indebtedness and are redeemable at our option at the applicable redemption price. On April 15, 2016, proceeds from the debt issuances, together with cash on hand, were used to repay and early retire all of our $1 billion, 6.125% Notes which were due on October 3, 2016 and all of our $300 million, 5.85% Notes which were due on March 15, 2017. In connection with these early retirements, in April 2016 we recorded $40 million of additional interest expense in connection with the discharge of indebtedness. On March 28, 2013, we entered into a credit agreement (the “Credit Agreement”) with a bank group, with an aggregate commitment of $1.25 billion and a maturity date of March 28, 2018. On May 29, 2015 and August 28, 2015, we amended the Credit Agreement with the bank group (the “Amended Credit Agreement”). The Amended Credit Agreement reduced the aggregate commitment to $750 million and extends the maturity date to May 29, 2020. Under the Amended Credit Agreement, at our request and subject to certain conditions, we can increase the aggregate commitment up to an additional $375 million with the current bank group or new lenders. The Amended Credit Agreement provides for an unsecured revolving credit facility available to us and one of our foreign subsidiaries, in U.S. dollars, European euros and certain other currencies. Borrowings under the revolver denominated in euros are limited to $500 million, equivalent. We can also borrow swingline loans up to $75 million and obtain letters of credit of up to $100 million; any outstanding letters of credit under the Amended Credit Agreement reduce our borrowing capacity. At March 31, 2016, we had $1.5 million of outstanding standby letters of credit under the Amended Credit Agreement. Revolving credit loans bear interest under the Amended Credit Agreement, at our option, at (A) a rate per annum equal to the greatest of (i) the prime rate, (ii) the Federal Funds effective rate plus 0.50% and (iii) LIBOR plus 1.0% (the “Alternative Base Rate”); plus an applicable margin based upon our then-applicable corporate credit ratings; or (B) LIBOR plus an applicable margin based upon our then-applicable corporate credit ratings. The foreign currency revolving credit loans bear interest at a rate equal to LIBOR plus an applicable margin based upon our then-applicable corporate credit ratings. The Amended Credit Agreement contains financial covenants requiring us to maintain (A) a maximum net leverage ratio, as adjusted for certain items, of 4.0 to 1.0, and (B) a minimum interest coverage ratio, as adjusted for certain items, equal to or greater than 2.5 to 1.0. In order for us to borrow under the Amended Credit Agreement, there must not be any default in our covenants in the Amended Credit Agreement (i.e., in addition to the two financial covenants, principally limitations on subsidiary debt, negative pledge restrictions, legal compliance requirements and maintenance of properties and insurance) and our representations and warranties in the Amended Credit Agreement must be true in all material respects on the date of borrowing (i.e., principally no material adverse change or litigation likely to result in a material adverse change, since December 31, 2014, in each case, no material ERISA or environmental non-compliance, and no material tax deficiency). We were in compliance with all covenants and had no borrowing under the Amended Credit Agreement at March 31, 2016.

DEBT

On March 17, 2016, we issued $400 million of 3.5% Notes due April 1, 2021 and $500 million of 4.375% Notes due April 1, 2026. We received proceeds of $896 million, net of discount, for the issuance of these Notes. The Notes are senior indebtedness and are redeemable at our option at the applicable redemption price. On April 15, 2016, proceeds from the debt issuances, together with cash on hand, were used to repay and early retire all of our $1 billion, 6.125% Notes which were due on October 3, 2016 and all of our $300 million, 5.85% Notes which were due on March 15, 2017. In connection with these early retirements, in April 2016 we recorded $40 million of additional interest expense in connection with the discharge of indebtedness.

On March 28, 2013, we entered into a credit agreement (the “Credit Agreement”) with a bank group, with an aggregate commitment of $1.25 billion and a maturity date of March 28, 2018. On May 29, 2015 and August 28, 2015, we amended the Credit Agreement with the bank group (the “Amended Credit Agreement”). The Amended Credit Agreement reduced the aggregate commitment to $750 million and extends the maturity date to May 29, 2020. Under the Amended Credit Agreement, at our request and subject to certain conditions, we can increase the aggregate commitment up to an additional $375 million with the current bank group or new lenders.

The Amended Credit Agreement provides for an unsecured revolving credit facility available to us and one of our foreign subsidiaries, in U.S. dollars, European euros and certain other currencies. Borrowings under the revolver denominated in euros are limited to $500 million, equivalent. We can also borrow swingline loans up to $75 million and obtain letters of credit of up to $100 million; any outstanding letters of credit under the Amended Credit Agreement reduce our borrowing capacity. At March 31, 2016, we had $1.5 million of outstanding standby letters of credit under the Amended Credit Agreement.

Revolving credit loans bear interest under the Amended Credit Agreement, at our option, at (A) a rate per annum equal to the greatest of (i) the prime rate, (ii) the Federal Funds effective rate plus 0.50% and (iii) LIBOR plus 1.0% (the “Alternative Base Rate”); plus an applicable margin based upon our then-applicable corporate credit ratings; or (B) LIBOR plus an applicable margin based upon our then-applicable corporate credit ratings. The foreign currency revolving credit loans bear interest at a rate equal to LIBOR plus an applicable margin based upon our then-applicable corporate credit ratings.

The Amended Credit Agreement contains financial covenants requiring us to maintain (A) a maximum net leverage ratio, as adjusted for certain items, of 4.0 to 1.0, and (B) a minimum interest coverage ratio, as adjusted for certain items, equal to or greater than 2.5 to 1.0.

In order for us to borrow under the Amended Credit Agreement, there must not be any default in our covenants in the Amended Credit Agreement (i.e., in addition to the two financial covenants, principally limitations on subsidiary debt, negative pledge restrictions, legal compliance requirements and maintenance of properties and insurance) and our representations and warranties in the Amended Credit Agreement must be true in all material respects on the date of borrowing (i.e., principally no material adverse change or litigation likely to result in a material adverse change, since December 31, 2014, in each case, no material ERISA or environmental non-compliance, and no material tax deficiency). We were in compliance with all covenants and had no borrowing under the Amended Credit Agreement at March 31, 2016.