Financing Agreements (Tables)

12 Months Ended

Dec. 31, 2014

Debt Instrument [Line Items]

Long-Term Debt

Long-term debt at December 31 —

	Interest Rate	2014		2013
Senior Notes due February 15, 2019	6.500%	$	55	$	400
Senior Notes due February 15, 2021	6.750%	350		350
Senior Notes due September 15, 2021	5.375%	450		450
Senior Notes due September 15, 2023	6.000%	300		300
Senior Notes due December 15, 2024	5.500%	425
Other indebtedness		79		99
Total		1,659		1,599
Less: current maturities		46		32
Total long-term debt		$	1,613	$	1,567

Scheduled Principal Payments on Long-Term Debt

Scheduled principal payments on long-term debt as of December 31, 2014 —

	2015		2016		2017		2018		2019		Thereafter		Total
Debt maturities	$	46	$	42	$	21	$	5	$	17	$	1,528	$	1,659

Margin Based on Remaining Borrowing Availability

Advances under the Amended Revolving Facility bear interest at a floating rate based on, at our option, the base rate or LIBOR (each as described in the revolving credit agreement) plus a margin based on the undrawn amounts available under the agreement as set forth below:

	Margin
Remaining Borrowing Availability	Base Rate		LIBOR Rate
Greater than $350	0.50	%	1.50	%
Greater than $150 but less than or equal to $350	0.75	%	1.75	%
$150 or less	1.00	%	2.00	%

Senior Notes Sold In 2014 [Member]

Debt Instrument [Line Items]

Redemption Prices

We may redeem some or all of the December 2024 Notes at the following redemption prices (expressed as percentages of principal amount), plus accrued and unpaid interest to the redemption date, if redeemed during the 12-month period commencing on December 15 of the years set forth below:

	Redemption Price
	December
Year	2024 Notes
2019	102.750	%
2020	101.833	%
2021	100.917	%
2022	100.000	%
2023	100.000	%

Senior Notes Sold In 2013 [Member]

Debt Instrument [Line Items]

Redemption Prices

We may redeem some or all of the September 2021 Notes and the September 2023 Notes at the following redemption prices (expressed as percentages of principal amount), plus accrued and unpaid interest to the redemption date, if redeemed during the 12-month period commencing on September 15 of the years set forth below:

	Redemption Price
Year	September 2021 Notes		September 2023 Notes
2016	104.031	%
2017	102.688	%
2018	101.344	%	103.000	%
2019	100.000	%	102.000	%
2020	100.000	%	101.000	%
2021			100.000	%
2022			100.000	%

Senior Notes Sold In 2011 [Member]

Debt Instrument [Line Items]

Redemption Prices

We may redeem some or all of the February 2019 Notes and the February 2021 Notes at the following redemption prices (expressed as percentages of principal amount), plus accrued and unpaid interest to the redemption date, if redeemed during the 12-month period commencing on February 15 of the years set forth below:

	Redemption Price
Year	February 2019 Notes		February 2021 Notes
2015	103.250	%
2016	101.625	%	103.375	%
2017	100.000	%	102.250	%
2018	100.000	%	101.125	%
2019			100.000	%
2020			100.000	%