Goodwill and Other Intangible Assets (Other Intangible Assets) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Net Amount	$ 1,018
Amortization expense	178	128	8
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2014	161
2015	146
2016	131
2017	107
2018	90
Thereafter	383
Net Amount	1,018
Non-compete agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Remaining Amortization Period	40 months	51 months
Gross Carrying Amount	54	56
Accumulated Amortization	18	9
Net Amount	36	47
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Net Amount	36	47
Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Remaining Amortization Period	13 years	14 years
Gross Carrying Amount	1,227	1,233
Accumulated Amortization	285	144
Net Amount	942	1,089
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Net Amount	942	1,089
Trade names and associated trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Remaining Amortization Period	40 months	52 months
Gross Carrying Amount	81	82
Accumulated Amortization	41	18
Net Amount	40	64
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Net Amount	$ 40	$ 64