Financing Agreements (Tables)

12 Months Ended

Dec. 31, 2017

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments [Table Text Block]

Long-term debt at December 31 —

			2017					2016
	Interest Rate		Principal		Unamortized Debt Issue Costs			Principal		Unamortized Debt Issue Costs
Senior Notes due September 15, 2021	5.375%		$	—	$	—		$	450	$	(5	)
Senior Notes due September 15, 2023	6.000%		300		(4		)	300		(4		)
Senior Notes due December 15, 2024	5.500%		425		(5		)	425		(6		)
Senior Notes due April 15, 2025	5.750%	*	400		(6		)
Senior Notes due June 1, 2026	6.500%	*	375		(6		)	375		(6		)
Term Facility			275		(1		)
Other indebtedness			29					120
Total			$	1,804	$	(22	)	$	1,670	$	(21	)

* In conjunction with the issuance of the April 2025 Notes we entered into 8-year fixed-to-fixed cross-currency swaps which have the effect of economically converting the April 2025 Notes to euro-denominated debt at a fixed rate of 3.850%. See Note 15 for additional information. In conjunction with the issuance of the June 2026 Notes we entered into 10-year fixed-to-fixed cross-currency swaps which have the effect of economically converting the June 2026 Notes to euro denominated debt at a fixed rate of 5.140%. See Note 15 for additional information.

Scheduled Principal Payments on Long-Term Debt [Table Text Block]

Scheduled principal payments on long-term debt at December 31, 2017 —

	2018		2019		2020		2021		2022		Thereafter		Total
Debt maturities	$	12	$	19	$	19	$	18	$	216	$	1,501	$	1,785

Debt Instrument Redemption [Table Text Block]

We may redeem some or all of the senior 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 the anniversary date of the senior notes in the years set forth below:

	Redemption Price
	September		December		April		June
Year	2023 Notes		2024 Notes		2025 Notes		2026 Notes
2018	103.000	%
2019	102.000	%	102.750	%
2020	101.000	%	101.833	%	104.313	%
2021	100.000	%	100.917	%	102.875	%	103.250	%
2022	100.000	%	100.000	%	101.438	%	102.167	%
2023			100.000	%	100.000	%	101.083	%
2024					100.000	%	100.000	%
2025							100.000	%

Schedule of Credit Agreements [Table Text Block]

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

	Margin
Total Net Leverage Ratio	Base Rate		Eurodollar Rate
Less than or equal to 1.00:1.00	0.50	%	1.50	%
Greater than 1.00:1.00 but less than or equal to 2.00:1.00	0.75	%	1.75	%
Greater than 2.00:1.00	1.00	%	2.00	%

We have elected to pay interest on our advance under the Term Facility at the Eurodollar Rate. The interest rate on the Term Facility, inclusive of the applicable margin, was 3.28488% as of December 31, 2017.

Commitment fees are applied based on the average daily unused portion of the available amounts under the Revolving Facility as set forth below:

Total Net Leverage Ratio	Commitment Fee
Less than or equal to 1.00:1.00	0.250	%
Greater than 1.00:1.00 but less than or equal to 2.00:1.00	0.375	%
Greater than 2.00:1.00	0.500	%

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

	Margin
Total Net Leverage Ratio	Base Rate		Eurodollar Rate
Less than or equal to 1.00:1.00	0.50	%	1.50	%
Greater than 1.00:1.00 but less than or equal to 2.00:1.00	0.75	%	1.75	%
Greater than 2.00:1.00	1.00	%	2.00	%