v3.8.0.1

Debt (First Lien Term Loans) (Details) - USD ($)
$ in Millions

3 Months Ended

9 Months Ended

Sep. 30, 2017

Mar. 31, 2017

Sep. 30, 2016

Sep. 30, 2017

Sep. 30, 2016

Dec. 31, 2016

Debt Instrument [Line Items]

Long-term Debt

$ 11,484

$ 11,484

$ 12,046

Gain (Loss) on Extinguishment of Debt

1

$ 0

26

$ 15

2017 First Lien Term Loan [Member]

Debt Instrument [Line Items]

Long-term Debt

^[1]

149

149

537

Gain (Loss) on Extinguishment of Debt

1

4

New 2019 First Lien Term Loan [Member]

Debt Instrument [Line Items]

Debt Instrument, Face Amount

$ 400

Long-term Debt

389

389

0

Debt Issuance Costs, Net

$ 8

Percentage of principal amount of Term Loan to be paid quarterly

0.25%

Debt Instrument Unamortized Discount Percent

1.00%

2023 First Lien Term Loan [Member]

Debt Instrument [Line Items]

Long-term Debt

1,067

1,067

1,071

2024 First Lien Term Loan [Member]

Debt Instrument [Line Items]

Long-term Debt

1,547

1,547

1,557

First Lien Term Loans [Member]

Debt Instrument [Line Items]

Long-term Debt

3,152

3,152

3,165

First Lien Notes 2023 [Member]

Debt Instrument [Line Items]

Long-term Debt

^[2]

0

0

$ 450

Gain (Loss) on Extinguishment of Debt

$ 21

Federal Funds Effective Rate [Member] | New 2019 First Lien Term Loan [Member]

Debt Instrument [Line Items]

Debt Instrument, Basis Spread on Variable Rate

0.50%

Eurodollar Rate For A One-Month Interest Period [Member] | New 2019 First Lien Term Loan [Member]

Debt Instrument [Line Items]

Debt Instrument, Basis Spread on Variable Rate

1.00%

Prime Rate or The Eurodollar Rate For A One-Month Interest Period [Member] | New 2019 First Lien Term Loan [Member]

Debt Instrument [Line Items]

Debt Instrument, Basis Spread on Variable Rate

0.75%

London Interbank Offered Rate (LIBOR) [Member] | New 2019 First Lien Term Loan [Member]

Debt Instrument [Line Items]

Debt Instrument, Basis Spread on Variable Rate

1.75%

Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member] | New 2019 First Lien Term Loan [Member]

Debt Instrument [Line Items]

Debt Instrument, Interest Rate, Stated Percentage

0.00%

Early Redemption Amount [Member] | 2017 First Lien Term Loan [Member]

Debt Instrument [Line Items]

Long-term Debt, Gross

$ 400

$ 400

Early Redemption Amount [Member] | First Lien Notes 2023 [Member]

Debt Instrument [Line Items]

Long-term Debt, Gross

$ 453

[1]	For the nine months ended September 30, 2017, we used cash on hand to repay $400 million of our outstanding 2017 First Lien Term Loan. We recorded approximately $1 million and $4 million in debt extinguishment costs for the three and nine months ended September 30, 2017, related to the partial repayment of our 2017 First Lien Term Loan.
[2]	On March 6, 2017, we used cash on hand along with the proceeds from our 2019 First Lien Term Loan to redeem the remaining $453 million of our 2023 First Lien Notes, plus accrued and unpaid interest. During the first quarter of 2017, we recorded approximately $21 million in debt extinguishment costs related to the redemption of our 2023 First Lien Notes.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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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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