Income Taxes	9 Months Ended
Sep. 30, 2014
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The effective tax rates for the three months ended September 30, 2014 and 2013 were 34.0% and 231.8%, respectively. The primary reason for the change in the tax rates was the conclusion of an Internal Revenue Service ("IRS") audit in the prior year. Due to the completion of the IRS audit for the Company's 2006-2008 federal income tax returns, DPS recognized an income tax benefit of $463 million primarily related to decreasing its liability for unrecognized tax benefits. This impact changed the Company's effective tax rate by 195.5% for the three months ended September 30, 2013. The effective tax rates for the nine months ended September 30, 2014 and 2013 were 34.5% and (53.1)%, respectively. In addition to the completion of the IRS audit described above, the effective tax rate for the nine months ended September 30, 2013 included the impact of a Canadian law change which reduced amounts amortized for income tax purposes. The conclusion of the IRS audit and the Canadian tax law change impacted the Company’s effective tax rate by 89.1% for the nine months ended September 30, 2013. Additionally, for the three months and nine months ended September 30, 2014, the current year provision for income taxes included an income tax benefit of $4 million due to the resolution of a tax audit in a foreign jurisdiction. Refer to Note 9 for additional information on the indemnity expense impact related to the conclusion of the IRS audit and the Canadian tax law change.

Income Taxes

9 Months Ended

Sep. 30, 2014

The effective tax rates for the three months ended September 30, 2014 and 2013 were 34.0% and 231.8%, respectively. The primary reason for the change in the tax rates was the conclusion of an Internal Revenue Service ("IRS") audit in the prior year. Due to the completion of the IRS audit for the Company's 2006-2008 federal income tax returns, DPS recognized an income tax benefit of $463 million primarily related to decreasing its liability for unrecognized tax benefits. This impact changed the Company's effective tax rate by 195.5% for the three months ended September 30, 2013.

The effective tax rates for the nine months ended September 30, 2014 and 2013 were 34.5% and (53.1)%, respectively. In addition to the completion of the IRS audit described above, the effective tax rate for the nine months ended September 30, 2013 included the impact of a Canadian law change which reduced amounts amortized for income tax purposes. The conclusion of the IRS audit and the Canadian tax law change impacted the Company’s effective tax rate by 89.1% for the nine months ended September 30, 2013.

Additionally, for the three months and nine months ended September 30, 2014, the current year provision for income taxes included an income tax benefit of $4 million due to the resolution of a tax audit in a foreign jurisdiction.

Refer to Note 9 for additional information on the indemnity expense impact related to the conclusion of the IRS audit and the Canadian tax law change.