Long-Term Debt	9 Months Ended
Sep. 30, 2015
Debt Disclosure [Abstract]
Long-Term Debt	Long-Term Debt In April 2015, the Company entered into an amended and restated revolving credit agreement that restated its existing $2.0 billion revolving credit agreement with a syndicate of banks and extended its maturity from October 2018 to April 2020. The amended and restated credit agreement also provided that the Company’s subsidiaries that were guaranteeing its obligations under the revolving credit facility were released from their respective guarantees. Borrowings under the amended revolving credit facility continue to bear interest at a variable rate based on LIBOR or on a base rate, plus a specified margin based on the Company’s long-term debt rating in effect from time to time. There are no significant commitment fees and no compensating balance requirements. The amended revolving credit facility contains various restrictions and covenants that are substantially similar to those under the Company’s previously existing credit agreement. In April 2015, the Company also entered into an amendment to its term loan facility to conform certain of its terms to those in the amended and restated credit agreement, including providing that its subsidiaries that were guaranteeing its obligations under the term loan facility were released from their respective guarantees. In addition, in April 2015, the Company provided notice to the trustee under the indenture and supplemental indentures governing its outstanding senior notes that the subsidiary guarantors of the outstanding senior notes were automatically released from all of their obligations under the supplemental indentures and their respective guarantees. In May 2015, the Company completed an offering of $1.75 billion of senior notes comprised of $850 million aggregate principal amount of 2.7% senior notes due in June 2020 and $900 million aggregate principal amount of 3.85% senior notes due in June 2025. The notes pay interest semi-annually on June 1 and December 1, commencing on December 1, 2015. The interest rate applicable to these notes is subject to an increase of up to two percent in the event that the Company’s credit rating is downgraded below investment grade. The indentures governing the senior notes contain covenants that, among other matters, limit (i) the Company’s ability to consolidate or merge into, or convey, transfer or lease all or substantially all of its properties and assets to, another person, (ii) the Company’s and certain of its subsidiaries’ ability to create or assume liens, and (iii) the Company’s and certain of its subsidiaries’ ability to engage in sale and leaseback transactions. The Company used the net proceeds from this offering to redeem its $600 million aggregate principal amount of 3.125% senior notes due in June 2016 and $500 million aggregate principal amount of 6.8% senior notes due in November 2017. The Company recorded a pre-tax loss on early debt extinguishment of $85 million related to make-whole payments and other costs associated with this redemption. In addition, the Company paid scheduled December 2015 and December 2016 principal payments on the term loan totaling $180 million and repaid outstanding borrowings under the amended and restated revolving credit facility. At September 30, 2015 and December 31, 2014, the Company’s $300 million aggregate principal amount of 3.125% senior notes due in October 2015 were classified in the consolidated balance sheets as long-term as the Company had the intent to refinance this debt on a long-term basis and the ability to do so under its amended and restated revolving credit facility. In October 2015, the Company used available borrowings under the amended and restated revolving credit facility to repay the $300 million aggregate principal amount of 3.125% senior notes.

Long-Term Debt

In April 2015, the Company entered into an amended and restated revolving credit agreement that restated its existing $2.0 billion revolving credit agreement with a syndicate of banks and extended its maturity from October 2018 to April 2020. The amended and restated credit agreement also provided that the Company’s subsidiaries that were guaranteeing its obligations under the revolving credit facility were released from their respective guarantees. Borrowings under the amended revolving credit facility continue to bear interest at a variable rate based on LIBOR or on a base rate, plus a specified margin based on the Company’s long-term debt rating in effect from time to time. There are no significant commitment fees and no compensating balance requirements. The amended revolving credit facility contains various restrictions and covenants that are substantially similar to those under the Company’s previously existing credit agreement. In April 2015, the Company also entered into an amendment to its term loan facility to conform certain of its terms to those in the amended and restated credit agreement, including providing that its subsidiaries that were guaranteeing its obligations under the term loan facility were released from their respective guarantees. In addition, in April 2015, the Company provided notice to the trustee under the indenture and supplemental indentures governing its outstanding senior notes that the subsidiary guarantors of the outstanding senior notes were automatically released from all of their obligations under the supplemental indentures and their respective guarantees.

In May 2015, the Company completed an offering of $1.75 billion of senior notes comprised of $850 million aggregate principal amount of 2.7% senior notes due in June 2020 and $900 million aggregate principal amount of 3.85% senior notes due in June 2025. The notes pay interest semi-annually on June 1 and December 1, commencing on December 1, 2015. The interest rate applicable to these notes is subject to an increase of up to two percent in the event that the Company’s credit rating is downgraded below investment grade. The indentures governing the senior notes contain covenants that, among other matters, limit (i) the Company’s ability to consolidate or merge into, or convey, transfer or lease all or substantially all of its properties and assets to, another person, (ii) the Company’s and certain of its subsidiaries’ ability to create or assume liens, and (iii) the Company’s and certain of its subsidiaries’ ability to engage in sale and leaseback transactions. The Company used the net proceeds from this offering to redeem its $600 million aggregate principal amount of 3.125% senior notes due in June 2016 and $500 million aggregate principal amount of 6.8% senior notes due in November 2017. The Company recorded a pre-tax loss on early debt extinguishment of $85 million related to make-whole payments and other costs associated with this redemption. In addition, the Company paid scheduled December 2015 and December 2016 principal payments on the term loan totaling $180 million and repaid outstanding borrowings under the amended and restated revolving credit facility.

At September 30, 2015 and December 31, 2014, the Company’s $300 million aggregate principal amount of 3.125% senior notes due in October 2015 were classified in the consolidated balance sheets as long-term as the Company had the intent to refinance this debt on a long-term basis and the ability to do so under its amended and restated revolving credit facility. In October 2015, the Company used available borrowings under the amended and restated revolving credit facility to repay the $300 million aggregate principal amount of 3.125% senior notes.